SWGoH Character Priority List

ARENA STORE:
Stormtrooper Han			Arena, Credit/Droid Heist, Critical Chance Mod Challenge, Tenacity Mod Challenge, AAT, Palpatine Event
IG-88						Arena, Credit/Droid Heist, Critical Chance Mod Challenge, AAT, [Bounty Hunter team]
HK-47						Arena, AAT
Chief Nebit					Critical Damage Mod Challenge, AAT
Admiral Ackbar				Ships, Tenacity Mod Challenge, AAT, Palpatine Event
Princess Leia				Tenacity Mod Challenge, AAT, Palpatine Event, [Clone team]
Darth Sidious				Arena, Rancor, [Sith team], [Resistance Expose team]
Savage Opress				Arena, [Sith team]
Cassian Andor				Arena, Ships, Tenacity Mod Challenge, AAT, Palpatine Event
Asajj Ventress				Arena, [Stun team?]
Mace Windu					Ships, Defense Mod Challenge, Yoda Event
Grand Moff Tarkin			Ships, Potency Mod Challenge
Greedo						Credit/Droid Heist, Critical Chance Mod Challenge, [Bounty Hunter team]

Nute Gunray
Eeth Koth
Ugnaught
Coruscant Underworld Police

--------------------

CANTINA STORE:
Boba Fett					Arena, Ships, Credit/Droid Heist, Critical Chance Mod Challenge, [Bounty Hunter team]
Qui-Gon Jinn				Arena, Defense Mod Challenge, Yoda Event, Rancor
Ahsoka Tano					Ships, Defense Mod Challenge, Yoda Event, AAT
Jawa Scavenger				Critical Damage Mod Challenge, AAT
CT-5555 "Fives"				Arena, Ships, Rancor, [Clone team]
Poe Dameron					Arena, Ships, Speed Mod Challenge, [Resistance Expose team]
First Order Officer			Arena, Offense Mod Challenge, Rancor
Bistan						Ships, Tenacity Mod Challenge, Rancor, Palpatine Event
Old Daka					[Stun team]
Hoth Rebel Scout			Tenacity Mod Challenge, Palpatine Event

Jedi Knight Guardian
Stormtrooper
Mob Enforcer

--------------------

GALACTIC WAR STORE:
Biggs Darklighter			Arena, Ships, Tenacity Mod Challenge, AAT, Palpatine Event
Luminara Unduli				Defense Mod Challenge, Yoda Event
IG-86 Sentinel Droid		Arena, AAT
Teebo						Rancor, AAT
Dathcha						Critical Damage Mod Challenge, AAT
Captain Phasma				Arena, Ships, Offense Mod Challenge, Rancor, [Stun team]
K-2SO						Arena, Ships, Tenacity Mod Challenge, Palpatine Event
Cad Bane					Credit/Droid Heist, Critical Chance Mod Challenge, [Bounty Hunter team?]
Resistance Pilot			Ships, Speed Mod Challenge, [Resistance Expose team]
Magmatrooper				Arena
Tusken Raider				Rancor

Poggle the Lesser
Nightsister Initiate

--------------------

GUILD STORE:
CT-7567 "Rex"				Arena, Ships, Rancor, AAT, [Clone team]
Jawa Engineer				Critical Damage Mod Challenge
Darth Maul					Arena, Ships, AAT, [Sith team]
Sun Fac						Arena, Ships, AAT
Ima-Gun Di					Defense Mod Challenge, Yoda Event, AAT, [Jedi Counter team]
Jyn Erso					Arena, Ships, Tenacity Mod Challenge, Rancor, AAT, Palpatine Event
CC-2224 "Cody"				AAT, [Clone team]
CT-21-0408 "Echo"			AAT, [Clone team]
Rey							Arena, Ships, Speed Mod Challenge, [Resistance Expose team]
Resistance Trooper			Arena, Speed Mod Challenge, [Resistance Expose team]
Ewok Elder					Rancor, AAT
Tusken Shaman				Rancor, AAT
Zam Wesell					Credit/Droid Heist, Critical Chance Mod Challenge, [Bounty Hunter team?]
Dengar						Credit/Droid Heist, Critical Chance Mod Challenge, Rancor, [Bounty Hunter team?]

Luke Skywalker
Snowtrooper
Gamorrean Guard

--------------------

FLEET STORE/SHARD SHOP:
Chirrut Îmwe				Arena, Tenacity Mod Challenge, AAT, Palpatine Event
General Grievous			?

--------------------

CANTINA BATTLES:
Lando Calrissian			Arena, Credit/Droid Heist, Critical Chance Mod Challenge, Tenacity Mod Challenge, AAT, Palpatine Event
Wedge Antilles				Arena, Ships, Tenacity Mod Challenge, AAT, Palpatine Event
B2 Super Battle Droid		Arena
TIE Fighter Pilot			Arena, Ships, Potency Mod Challenge, [Empire team]
Jawa*						Critical Damage Mod Challenge, AAT
Kylo Ren					Arena, Ships, Offense Mod Challenge, AAT
Jedi Knight Anakin*			Arena, Defense Mod Challenge, Yoda Event, AAT
Aayla Secura				Defense Mod Challenge, Yoda Event, AAT, [Jedi Counter team], [Stun team]
Geonosian Soldier			Ships
Barriss Offee*				Arena, Defense Mod Challenge, Yoda Event
Royal Guard*				Arena, Potency Mod Challenge, AAT, [Empire team], [Stun team]
Finn*						Arena, Ships, Speed Mod Challenge, [Resistance Expose team]
Chief Chirpa				AAT
Count Dooku*				Arena, [Sith team]
Jedi Consular*				Ships, Defense Mod Challenge, Yoda Event
Plo Koon*					Ships, Defense Mod Challenge, Yoda Event
Scarif Rebel Pathfinder		Ships, Tenacity Mod Challenge, Palpatine Event
Obi-Wan Kenobi (Old Ben)	Defense Mod Challenge, Yoda Event
Clone Wars Chewbacca*		Credit/Droid Heist, Critical Chance Mod Challenge, Rancor

Kit Fisto
Geonosian Spy
IG-100 MagnaGuard*
Talia*
Nightsister Acolyte

*also from Hard Battles
--------------------

HARD BATTLES:
Baze Malbus					Arena, Tenacity Mod Challenge, AAT, Palpatine Event
Shoretrooper				Arena, Ships, Potency Mod Challenge, [Empire team]
First Order TIE Pilot		Arena, Ships, Offense Mod Challenge
First Order Stormtrooper	Arena, Ships, Offense Mod Challenge
Clone Sergeant - Phase I	Ships, AAT, [Clone team]
Ewok Scout					Rancor

Hoth Rebel Soldier
Lobot
General Veers
URoRRuR'R'R

--------------------

CHROMIUM/SHIPMENTS (no particular order):
Director Krennic			Arena, Potency Mod Challenge, Rancor, [Empire team]
Death Trooper				Arena, Ships, Potency Mod Challenge, [Empire team]
Darth Nihilus				Arena, AAT, [Sith team]
Sith Assassin				Arena, [Sith team]
Sith Trooper				Arena, AAT, [Sith team]

--------------------

ACHIEVEMENTS/EVENTS/RAIDS (no particular order):
Darth Vader					Arena, Ships, Potency Mod Challenge, Rancor, AAT, [Empire team], [Sith team]
Emperor Palpatine			Arena, Potency Mod Challenge, AAT, [Empire team], [Sith team], [Stun team]
Grand Master Yoda			Arena, Defense Mod Challenge, Rancor, AAT
General Kenobi				Arena, Defense Mod Challenge, Yoda Event, AAT
Han Solo					Arena, Credit/Droid Heist, Critical Chance Mod Challenge, Tenacity Mod Challenge, AAT, Palpatine Event
Chopper						?
Hera Syndulla				?
Kanan Jarrus				?
Garazeb "Zeb" Orrelios		?
Ezra Bridger				?
Sabine Wren					?
Pao							?

--------------------

It's assumed that characters good for Arena will also work well for: LS/DS Battles, Cantina Battles, Mod Battles, Health Mod Challenge, regular Challenges, Galactic War, Tournaments, Omega Battles, and Assault Battles

Some characters, such as Jawa, Jawa Scavenger, Dathcha, and Luminara Unduli can be unlocked early, but don't necessarily have to be upgraded to 7-Star to fulfill their primary purposes. For example, the Jawas are obtained early in order to unlock the Critical Damage Mod Challenge; once this is done, the Jawas may be kept at 5-Star indefinitely, unless one chooses to use them for AAT.

as of March 27, 2017