Bad sport timer exploits
There needs to be an activity button for turn timers where if somebody has signed into a match, if they don't press a certain button or show any activity, the opponent should not have to wait for the long turn timers for them to be counted out. Far too frequently I'll come across people who are totally AFK and just relying on others to lose their patience and quit rather than wait for the turn timers to count them out or you get people who would rather go afk when they know they've lost just to force you to wait the timers out. That's bad sport behaviour and needs to be mitigated. In the very least a report player button should be there for people who do this so the game can be reviewed and bad sports can be matched with each other or banned from the game.