Inactivity

[Szei]

Well yes, vacation did occur to me. However, I then thought that, well, if you're going to go on vacation or to a place where you won't have internet access for a 4 days you can plan in advance and not start any games. I forgot that this is neglecting the fact that you could have ongoing games which you can't really finish up before you have to leave though.

MAYBE A COMPROMISE
You have a 6 day (the exact number can be tweaked) 'BANK' of extra time in addition to a 1 day per move standard time limit. If you don't make your turn in the allotted 1 day limit, you start eating into your 6 day bank.

This way it encourages players to stay on top of their games but if they're good about playing their turns on time they'll have a 'bank' of time to fall back on if something comes up and they can't play for an extended period of time.

This system could be reserved for league games while casual unranked games can continue using the current system (since you can just forfeit the game if your opponent is taking too long and you want to start new ones).