I didn't really mean an actual timer, but having no respawns will considerably affect how long a game can go on for, that's more the point I was trying to get across.
Having this many people per game means a rather large map, right? I've heard some talk of there being a lot of stairs and elevators, any other level design features to get around the map?
This makes the MTF sound a lot more fun to play as. I like the idea of everyone getting together and actually forming plans before going in, also having an idea on who is inside and what SCP have escaped is handy.