For the Elevators and party buttons, could you make them only require currently connected (and loaded) players that are alive?
It gets rather annoying having to wait for people who just joined the party or who take ages to load to be able to activate a party button, and even more so when you are at the end of the level and someone joins just before the elevator, so you need to wait for them to load, just to step on the elevator.

Also, I know this has been said before, but just to repeat to try and make it happen, can we get a hotkey for Gate Map?