XBox Live accounts not registered for the tournament are able to play in the global championship playlist?
Nothing is stopping the players in the top spots signing into a second account and to continue playing to help better secure their main account stays at the top?
Strategic quits?.. Wouldn’t it make more sense to drop games played rather than allow strategic quits. Say, drop the highest and lowest game played of every 20 matches to account for randomness associated with connection and/or host advantages?..