[Jammin]

Just bear in mind that movement is fundamentally different on murder as opposed to TTT.
If someone bhops about in Murder, they are a hacker.
If someone bhops about in TTT, they are a sweaty gamer.
If someone bhops about in PH, they are a child.
If someone bhops about in DR

Unlike TTT, where I feel jumppack is fundamental, I feel that murder could probably do away with a functionally similar replacement. Murder is less about movement tricks/flying and more about being able to get to different places/away from the knifeman, so I feel that doing something such as what russ suggests with a low-grav replacement would serve murder well.