There used to be a mod that added jetpacks to the game for pyros... It was called "AfterBurner"
It was with a bunch of other mods that made classes more versertile. When i decided to start up a dodgeball server with Asherkins DB Mod, i went to look for the mod and grab it again, but it appears that the mod had died off (Even the download link)
I was wondering, if you could create it again within the dodgeball mod with 2 extra cvars, 1 to enable it, and 1 for a length before the jetpack dies and starts making you fall down.
If you need more details, i'll gladly post as much as i can
-Thx in Adv