i think this is still a good option, but i really like what another mentioned about nuke option the concept of a surrender button could be in the form of this nuke option. the result is it allows one to exit a game.
I think that it could be a good option but with a stipukation or 2 perhaps using this option would have to cost some points therefore making it less likely that people would abuse it. or making it so that everyplayer gets a limited number of surrenders to use durin a certain timeframe.