Few more unique ideas for perk changes.

Agitation:

While Carrying a Survivor, your movement speed is increased by 18%

Your Terror Radius will be increased by 12 Meters while carrying a Survivor.

You can perform a Lunge while carrying a Survivor
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Beast of Prey:

Whenever you abandon a chase, you will be Undetectable until you initiate a chase with a survivor again.
Best of Prey has a 60 Second Cooldown.
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Bloodwarden:

Once an Exit Gate has been opened, when you hook a Survivor, the Exits will be blocked for 60 Seconds.

Anytime you hook a Survivor while Blood Warden is still activated, the Blood Warden Timer will increase another 20 Seconds.
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Coulrophobia:

Your Terror Radius is increased by 2 meters for each Survivor injured (up to 8 meters).

Any Survivors Healing within your Terror Radius will have a 50% Reduced Healing Speed.

Survivors in the Dying State within your Terror Radius will have a 15% Reduced Recovering Speed.
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Enduring:

You are Immune from Pallet Stuns.
Any stun you receive with the exception of Pallets are reduced by 30%. (Decisive Strike, Headon, Flashlight Saves, Pallet Saves.)
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Fire Up!:

Once a Generator has been completed, for the next 20 Seconds, you have an increased action speed of kicking pallets/gens, vaulting, picking up survivors, dropping survivors, hooking survivors, opening exit gates, and closing hatch by 25%

After the 20 seconds has ended, you will gain a token and each token will allow you to keep 5% of the increased action speed you get from when a generator has been completed.

Once all 5 Generators have been completed, you will have the 25% increased action speed permanently until the trial ends.
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Franklin's Demise:

Basic Attack on a Survivor will cause them to drop their item if they are carrying one.

Once the Survivor's Item drops from their hand, the Entity will be called upon and block that item and no survivor can pick up the item for 60 seconds.

The first time the item drops, the item will automatically lose 10% of it's charges.

If the item has no charges at all once it gets knocked out of the survivor's hands, the item will disappear from the trial.

Franklin's Demise has a 60 Second cooldown.
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Gearhead:

After performing 2 Basic Attacks on a Survivor, the Generator with the most amount of progress, that Generator will highlight in Yellow and Gearhead will be activated for 20 seconds.

Once Gearhead has been activated, any Survivor(s) repairing a Generator will have a 15% increased chances of triggering a skillcheck and skillchecks will be counter-clockwise.

Gearhead has a 30 Second Cooldown.
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Hex: Devour Hope:

When a Survivor gets unhooked when you are at least 24 Meters away, you gain a token up to a maximum of 5 tokens.

Devour Hope will not be linked to a Hex Totem until you get at least 1 token.

Each token does the following:
1 token = You see all 4 Survivor's Aura for 8 Seconds once a survivor has been unhooked when at least 24 meters away.
2 tokens = Gain a 5% increased movement speed.
3 tokens = All Survivor's will become Exposed. Survivors will also be notified that this perk is activated.
4 tokens = Your Terror Radius will be reduced by 8 Meters.
5 tokens = You can immediately kill all Survivor's by Hand.
Once Hex: Devour Hope has been cleansed, this perk will permanently deactivate.
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Hex: Huntress Lullaby:

Once you hook a Survivor, you will gain a token up to a maximum of 5 tokens.

Once you have gained all 5 tokens, Huntress Lullaby will be activated and a random dull totem will be transformed into a Hex Totem.

Once Huntress Lullaby has been activated, Survivors will NOT receive a noise indicator from Skill Checks triggering for Repairing and Healing and Failed Skill Checks will result in an 8% Regression Penalty.

If all 5 Totems have been destroyed before you get 5 tokens, Huntress Lullaby will not activate.
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Hex: The Third Seal:

At the Start of the Trial, All 4 Survivors will have the Blindness Status Effect applied to them

Once a Survivor gets hit with a Basic Attack, they will get blinded for 2 seconds.

You will keep these effects until Hex: The Third Seal has been Cleansed or Blessed.
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Hex: Thrill of the Hunt:

For each Dull/Hex Totems remaining in the trial, you will gain a stackable 20% Bonus Bloodpoints in all Categories up to 100%.

For each Totem Cleansed, you lose 20%.

Whenever a Survivor starts to Cleanse or Bless a Hex Totem, you will gain a loud noise notification.

Survivor's will suffer a stackable 10% penalty to Cleansing/Blessing totems up to 50% depending on how many totems are left in the trial.

Once Hex: Thrill of the Hunt has been Cleansed or Blessed, This perk will become disabled and however many Bonus Bloodpoints you gained while Hex: Thrill of the Hunt was still active, you keep those Bonus Bloodpoints and won't gain anymore.
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Hoarder:

Survivor's that is currently opening a chest or picks up an item within 64 Meters from you will have their location revealed to you and will show you what item they picked up for 3 seconds.

Survivor's currently using their item within your Terror Radius will have their Aura revealed to you.

Survivor's action speed from opening a chest is reduced by 20%

Reduces the chances of a Survivor to pick up an item of Rare or above by 100%.

Whenever a Survivor stops unlocking a chest, performing it again will reset the entire progress.
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Insidious:

Stand still for 2 Seconds and you will have the Undetectable Status Effect.

Once you start moving again, this effect will persist for another 4 Seconds.

Insidious has a 45 Second Cooldown.
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Iron Grasp:

While carrying a Survivor, you benefit from the following effects:
Decreases Wiggle effects which cause you to strafe sideways by 75%.
Increases Wiggle duration by 12%.

Whenever you drop a Survivor and pick them back up, they only gain 12% Wiggle Progression.
Decreases recovery when a Survivor wiggles out by 50%.
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Iron Maiden:

Reveals all Locker locations to you with a Yellow Aura when within 16 Meters from you.

You open Lockers 50% Faster than normal.

Survivor's that are currently in lockers will have the Oblivious Status Effect applied to them.

While a Survivor is entering or exiting a locker within your terror radius, they will have their location revealed with Killer Instinct for 4 Seconds.

Grabbing a Survivor out of a locker will call upon the Entity to block all Lockers on the map and can NOT be opened by any means for 30 seconds.

Any locker that is blocked by the Entity will be highlighted with a White Aura, however if there is a Survivor in a locker, that locker will be highlighted with a Red Aura.
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Knockout:

When a Survivor has been put into the Dying State, the other 3 Survivor's can NOT see that Survivor's Aura when beyond 16 Meters of that Survivor.

The Survivor that was just put into the Dying State will have the Blindness Status Effect applied to them, 15% reduced recovery speed, 20% reduced crawling speed, and 25% reduced regression from recovering.
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Lightborn:

Increases the brightness of the map by 30%
You can NOT be blinded or have the blindness status effect applied to you by any means.
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Monstrous Shrine:

Once a Survivor has been unhooked from a basement hook when you are at least 32 meters away, that Survivor will have the Oblivious, Blindness, and Deaf Status Effect the entity will be called upon blocking the entire basement for 30 seconds.
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Overwhelming Presence:

For each Survivor holding an Item, you gain a token up to a maximum of 4 Tokens, each token increases your Terror Radius by 2 Meters.

If a Survivor does not bring an item, pick up an item, or drop their item, 1 Token will be consumed.

Survivors within your Terror Radius have an increased consumption rate use from their items by 100%.

You can regain tokens if a Survivor picks up a dropped item or loots an item.
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Predator:

Footsteps from Survivor's are 30% Louder and Scratch Marks Left by Survivors are visible for 3 Seconds Longer.

Once a Survivor enters a chase, they will have a Hindered Status Effect with a reduce movement speed by 3% for 4 seconds.
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Remember Me!:

Basic Attack on your Obsession will grant you a stack up to a maximum of 4 Stacks.

Each Stack increases the time it takes to open exit gates by 10 Seconds. This does NOT effect your Obsession.

Any progression that the Exit Gates have, whenever they are NOT being opened, the progression they have will start to regress at 25% speed.
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Spies from the Shadows:

You see the Aura's of all Crow's with a Green Aura.

Whenever a Survivor scares off a Crow within a 36 Meter Range from you, their location will be revealed for 4 seconds by Killer Instinct.

Crows will respawn back in it's location 4 Seconds later.

You do NOT scare off crows yourself.
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Spirit Fury:

After breaking 1 Pallet, Spirit Fury will activate for the next 60 Seconds.

While Spirit Fury is active, the next Pallet you get stunned by will automatically break from the Entity.

Whenever a Survivor stuns you with a Pallet, for the next 12 Seconds, that Survivor will become Exposed.
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Territorial Imperative:

When a Survivor enters the basement at least 24 meters or more away from you, their aura will be permanently revealed to you until they leave the basement.
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Thanatophobia:

Any Survivor that is Injured, that Survivor has a 12% reduced Action Speed to Repair, Healing, Sabotaging, Cleansing, Opening Chests, and Opening Exit Gates.
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Unnerving Presence:

Survivors repairing or healing within your Terror suffer from the following effects:
Increases the Trigger odds of Skill by 10%.
Decreases the Success zone of Skill Checks by 60%.

If a Survivor fails a skillcheck from repairing or healing, they will hear a Terror Radius for 30 seconds.