GO4FUN:who the hell needs longer than 2,3 min for a simple reboot?
3 min is too long, they only get 2.5. I'd say 50% make it back into the game in 2.5 after a reboot. Remember that while the computers starts quicker and quicker, they take longer and longer to get ready since an average computer have a lot of auto start services. Not many run dedicated, lean, gaming machines. Also - the reboot option is usually the last resort, maybe half of the allowed time is already spent when you decide to reboot.
I can imagine that there could be an option "allow extra time" that the players in the lobby could click. Majority rules, if three players are waiting, two "allows" is enough, if two players are waiting, both must agree.
It is not fun to lose a alt shot just because your partners computer is slow at starting.