I for one would love to see better player speed or maybe optional sprinting, with options like "Can AI sprint" and stuff like that.

Team Tech List
I'd also like to see a Team Tech List system so if you want you can have the AI use only Dummy and Techion Technology/races instead of just one of the two or all or random, this would be a great addition and would also be handy if you want AI to use all but one race/tech and have that be only for the player.

Ground deployment instead of dropships, I think this can be done with a spawnpoint you place when building your bunker, or maybe a structure system can be added?
I'm thinking maybe you could be able to build turrets and cover during a round with prefabs and special objects, maybe repair them too, and perhaps repair doors!
Jump instead of jet option would also be nice, I'm thinking about a WW2 total conversion so I thought Ground Deployment and Jumping would be kick-ass.

Giant Robots / Mechs / Mechas
I'd LOVE to have some biped robots in my game, there is a mod called S.A.W. but I want a bigger robot.

Giant Spider robot
So I noticed there were these spider leg robots in the game, medical drones and gatling drones, walking around flipping and flopping all over the place... Why not a larger one with a gun turret that can rotate in every direction?

Giant Cyborg Crab
Why not have a giant cyborg crab with a machine gun too?