I can make suggestions for my own software, right?
I suggest a Death Spawn feature, which allows users to spawn somewhere other than the maps spawn upon death.
Example: During a game of spleef, falling through the hole you land into lava/water/nerve_gas which kills you. Upon that death, you spawn into a viewing box which you cannot escape out of to 'resume' the game.
This can also be used for 'sudden death' style shooting maps. And maybe you could implement a 'x deaths 'till no respawn' for some features, where you have to die a certain amount of times until you're respawned into the 'safe box'.