Not necessairly every ability obviously but it would be nice if you've completed an entire province it unlocks some extra nice things you can equip like one passive and one active ability only, and customize it like you do your drone selection. Maybe even the them into the backpacks just like cloak, Things like:
Suppression immunity
15% more run speed
50% more stamina
30% more health
A disruptor field that will counter vehicles being able to Target you if they are too close
Sharpshooters helmet ability
Echelon sonar
Vangards sensor beacons
Techs jammer to stop alarms and reinforcement calls
Divert Intel for coop play
Assassin increase to range reduction
Pathfinders increase to stealth time to be recognized(like cloak does now but stacks maybe)
Enforcers improved suppression
Snipers increased penetration
Sentinal satcoms
Surgeon stim heal
Predators adr. buff
Etc etc you should be only able to equip one of these at a time and for coop play it would really better enforce and support roles within the squad and allow for some more unique tactical play as long as some of the abilities are tweaked a bit for pve etc