this is radical,but WOULD SOLVE issues surrounding fast players waiting on slow movers.
instead a setting for time per game.
each player elect in his prefs how fast he wants to play games.
7 day
5 day
3 day
1 day
12 hours
the problem of players having different "play"settings from each other could be solved in on interraction between players in which a game time is agreed.and the setting for that game could be altered.
this would at least easily ID the fast or the slow players from the word go.

but this is a system wide change & might be good to try on a game site starting up.what ye all think?