Accually thats a fine wepoan the playerporter XD.
My thought about it
Make it so you choose a spot just like the normal teleporter.
And then you charge it (5 seconds) and shoot it at player which teleports him.
This can teleport them anywhere...mabye a trap or to a dangerous place which he can die easily with...or mabye a room occupied with traitor who will knife them the moment they go inside.