The ship and its obvious flaws.

[[Dx]SuicidalSpree]

to nullify idiots from shooting player on the ship all you need is a simple fence scriping may not be necessary for that

ship laming can use a sumiluar thing ive seen
"you cant teliport because you've reacentlly been in a gun fight"
same thing can be used with the ship and just evicts there ass back out

nades might be a abit more difficult you could just make it so throwing nades at the ship is considered laming and players can be punished by the victim for nading the ship