Hmm, put invisiblity on the the 'ambush' type classes
Real men bust into the enemies HQ, guns blazing, man. The stealthiest class is the Hitman... Hm... why not? He isn't armed beyond the Sniper Rifle.
Eh, a disguise kit would fit more in this game's era.
Edit: I don't know about you guys, but I would prefer if there wasn't anything like this.
Edit: How will the intel dropping papers thing work?
Edit: I suggest adding a custom sound for the tommy gun, too. All the rest of the sounds excluding the sniper rifle(being worked on by you) and the pistol(being worked on by you, too, I think) are fine.
Edit: I suggest using Dr. Random's gamemode idea for the first release and taking out CP for now. GG2 only had CTF at first, I think having Dr. Random's gamemode idea only for the first release will do.