Alright, let's cut to the chase people:
Do you want a class-ish system?
I think it would work for a few reasons.
Firstly, just having maybe one perk and choice of rifle. I think that seems a bit too little though. How about we have actual different classes? Like sniper, assault, engineer.... kinda like BF: 2142 except WAY different.... sorta... eh...
Second, maybe choice of starting grenade, starting sidearm (SMG, plasma rifle, pistol), starting weapon, (no rockets, no shotguns, and overall no power weapons) and maybe choice of med kit? For example-one for bullet wounds, one for plasma burns, one for head injuries? idk...
Also, something I REALLY want in a game is this: stumbling when shot. A person doesn't just keep walking after getting blasted by an AR. To add on to that, how about you also go slower unless treated by a medical kit?
Perhaps an "inventory" system would also do well. Like... right on the d-pad to open backpack, select with d-pad.... etc, etc.