I am not sure the problem you want to solve can be solved. You don't like people quit, I understand that. But what about people afk'ing for all the same reasons the others would quit, but these guys still want to grind for cxp? Or finding safe place and stacking there, as they think nothing better can be done anyway? Much worse than a quit for the rest of the team if team wants to try winning. Its really better to let people quit whenever they want and hope for a quick and good replacement than incline those just to afk instead. My idea was to have 'Surrender' button, if, say, 4 guys press it, game ends. But this is no go due to obvious cxp grind exploit