NVG's : get rid of the leading crosshairs and box... that's just lame. Also I note there is about a half second delay when using NVG's for target ID (Friendly/Foe), this is a real TK generator. How about drop Ident but paint Friendly/Foes different colors?
Hats: How about Counting Coup by having the ability to take someone's hat after you kill them? Just for fun.
Institute a Timer: such that the server admin can allow voting only once per 2minutes (or whatever), and kicked Persons are automatically blocked (by IP addy) for whatever period the admin sets again. A 2 minute time out for the kiddies will cause most of them to wander away... AHAD and all. Even nastier would be a reverse kick, If you start a vote to kick someone, and it fails, YOU are kicked instead. Add that to the block period for extra effect.
Jetpack: Just reverse the NUKE option... Strap on, it fires straight up and explodes... Player Fireworks! (NOT!)