Drones would be simple thing that fit in your equipment slot along with nanohives and injectors, they would be pretty simple doing bare bone basic task and float around you as a small ball of floating metal. They would be interesting element to gameplay and can be used for when you don't want to send in yourself. Drones could be small targets with low health making them useful so long as the other team has bad aim.

Medic drones would stay near the owner unless order to somewhere else and would revive any player in their vicinity with a short animation and would have you as the priority revivify.

Spy drones would float straight up above you and increase you TACNET sensor radius. Making them very useful but would tend to stay in one spot so a sniper could easily take them out.

Hacking drones would take longer to hack an objective but would give you a bit more freedom, hack drones would be the only one I say who could come back "in" to the suits/

Combat drone, would have a very weak low RoF weapon and would simple shoot at what ever your shooting at, they themselves would also be weak against attack.

Gank Drones, would float into a group of enemy's and explode they would be have low health but would travel in random zigzag spiral patterns so if a player good with a gun he could cause a gank to gank prematurely

drone strikes would be the EVE version of air strikes naplam and other stuff kill streaks handle in CoD, but hey would be based on a valid mechanic, wether or not Drones forces are avalible. wetehr or not these drones are avalible is if EVE player in space gives us access to his drones or if there is a drone base on the planet that we control.

a drone strike would be called in to do a heavy bombing run, or it could do a precision strike, or it could just drop some effect. this would give another element to warfare. along with this i think orbital bombardment should do alot more destruction.

a laser designator could become a side arm used to guide in a strikes and would be allow people to spec in calling those in, this would work best if a grid system was implemented and normal mercs not equiped with the designator could only call in general bombard to a grid coord, where as the laser could pick any spot it wanted