to me "lockdown" seems really gay. just so gay that i don't have anything to say about it. has "overused by nubs" written all over it BUT camo sounds awesome! protecting your bomb/flag while watching your radar and when that unexpecing red dot comes across you, activate it and just wait... BAM! assassination. the ***** didn't see it coming jetpack=instant boners for everyone. especially if they incorperated ledges and roof only accesible by the Jpack. sprint will be useful and my guess is that it will be used most by players more skilled and into strategy than casual players.
Active Camo for sure. With this you can 1v1 all your encounters. Just pop on the invis, get first blood, win in the shootout, and pop your invis again until somebody else graces your way. I know something like sprint can save your life or lead to a much-needed beatdown, but I've always just liked being ninja.