Perk suggestion:

Assault

1, Martyrdom (drop a grenade upon dying)
2, Last stand (dying enters a downed state using a pistol only for 10 seconds)

Medic

1, Increased AOE healing range of medical packs
2, overcharged defibs (enables offensive use of defib)

Engineer

1, over tuned (healing a vehicle prior to use enables a temporary speed boost. Only works on vehicles not driven or fired from)
2, reprogram beacon, use tool on enemy beacon to change to a squad beacon

Recon

1, Air beacon (spawn beacon now enables parachute drop, instead of normal spawn)
2, powered zip lines for increased travel speed