I don't know whether Promethean Vision is over powered, but it sure changes the way the game works on smaller maps.
Active camo shouldn't even be an armor ability, cause the only two choices are nerfing it to the point where it's sucks in anything other than power weapon situations(in which case it's just cheap) or leaving it in it's full glory(which would be overpowered as an armor ability). It should be an ordinance drop or something.
I personally use the jetpack on 4vs4 maps, to escape grenades, throw the enemy's aim off during gunfights, surprise enemies around the corner, make a retreat when I'm fighting a losing battle, and take short cuts through certain maps.
[Edited on 11.24.2012 10:13 AM PST]