Yeah, I've been thinking about how to do telefragging and how the projectile would work and everything. Here is the best system I've come up with so far.
The translocator projectile spawns as a vehicle, just like the propane can. This way you can bounce it around places, and set it on top of bricks. It would also mean that players could push it around, which adds an extra amount of risk to it, since someone could push it off the edge of the world or into a trap.
Upon teleporting, the translocator vehicle explodes, killing anyone on it, and then spawns you at the location after a short delay. Maybe the delay could be used to play some kind of sound and disappearing animation, so people have a visible cue that you are teleporting.