First: Wookies / Mon calamari
Why not make the Wookie / Mon calamari / a special pick up kit ?
Aliens should be exotic, and they aren't exoitc if every second player runs around as Wookie because "Wookie are kewl !!111!!"
One thing to consider:
This needs new models & skins and is much work.
Second: Females
In BF 2142 you have the option to change from Heavy to Light Armour. I don't know if this affects also the skin & look of the model, but if so this could be a easy way to switch the gender.
But this women will look like a girl and talk like a man, if the Voices aren't changed. 
Maybe a little less work than a Wookie...
Third: PickUp Kits of fallen Soldiers
Can live without them.
But maybe it's possible that a dead Player drops a cut down kit, only consist of his primary and secondary weapon ?
This would allow to pick up a dead mans gun and keep on fighting, but not to use special equiqment.
(But the Player will also lost his specials) Like the Special Kits in PoE the dropped kit could look like the weapon.
Forth: SpecialPickUp Kits in Armourys ect:
I like the armoury in PoE, it's a good feature.
In armourys all five standard Kits should be aviable. The kits should respawn after a Flag is taken, and only be usable by the matching side, so that the correct skins are included.
Special Kits may be Wookies, Botans, better Stormtroopers (Jetpacks ?).
Or "hidden" SpecialKits with only a lightsaber and a Pistol - think of the Katanas in PoE.
Fith: I would like to add "The Commander" to this poll.
In every Round of First Strike i played the squads don't coordinate their actions.
In most cases all squads are running to the same flag, leave the other out.
Or all squads run to attack a Flag, no Squad stays behind to defense.
Even without UAV, Artillery, Scan, EMP and Supplydrop a commander would be real helpfull to coordinate the squads.
CYNIC, n. A blackguard whose faulty vision sees things as they are, not as they ought to be. Hence the custom among the Scythians of plucking out a cynic’s eyes to improve his vision
