Okay, my question now is how hard would it be so that there was some kind of "fuel" for the jetpack in TF2? I think the worst part would be creating an official looking counter, kind of like the ammo counter except for the jetpack.
We had a lot of fun with it, but people never coming down kind of killed it after a while. If there was a way to make them run out of fuel for it (maybe the ammo boxes?), so that they only used it when they needed it, it would be awesome.