1. Removal of grandfathering
2. Removal of shell FC's
3. permit ONLY 1 house per DC per account and 1 FC Ownership per DC per account.

All of above they can do just following the ToS, there is an uproar everything these methods is mentioned, but I stand strong in that everyone should be standing on equal foot, also everytime SE needs to add more wards it costs them due to additional servers and the likes.