The ladder system

For a very long period of time, the Sc:bw USeast ladder system was rigged. All of the people that were on it were at 9999. If i recall correctly one of them had over 50,000 games under his name -_-. Well a little while ago, blizzard finally cleared the ladder. Just a few weeks after that, i already see people in the 9000's. What do you guys think blizzard can do to keep these cheaters off of the battle.net server. Im thinking they should restrict the number of games that players can play in a week to two or something like that. That way, players wouldnt be skyrocketing to 9999, and people who got there accounts erased for ladder abuse wouldnt be able to get on for quite a while. What do you guys say?