Ideas for MWG:
Perks:
Ammo pickup (Scarvenger i think)
Sprinter (runns faster but has more recoil)
Cat (runns silent gunshots are 30% more silenced)
Noscoper (20% less spray, when shooting from the hip)
Hardscoper (20% less Shaking when aiming)
Tactics (marks sprinting enemies, that are close (and don't have Cat Perk) on the minimap)

Killstreaks:
Juggernaut (100% more HP, less recoil, no running) 2 minutes or dead
Energy Drink (20% faster movement,but a little more shaking while aiming) 1 minute or dead
Fast Mag (10% more shooting rate and double reload speed) 30 seconds
Stimpack (heals teammates in 5 m radius up) 1 time use
EMP (EMP Grenade, that makes the screen of opponents blurry for 5 seconds)