Another vote for a differentiation in continent offerings (or gimmick continents, as I call them). How about lifting the character limit on one of the continents?
I'm actually thinking of going one step further. We are all complaining about OOC groups and clans, but what if we embraced them? Take a continent large enough, like Dwilight, or Atamara (but not Colonies, or EC) and invited them to set up their own realm. Let them show us that they're the man, prove it! I claim that a random group of BM players who have grasped the game will be more than a match for any clan, no matter how perfect their OOC organisation.
And it would be an interesting challenge for tons of clans out there.
The first step might be to differentiate one game world by essentially declaring it a free-for-all, making it clear that on this continent, which is a bad and evil place, every judge injustice, ruler favoritism, etc. is just part of the game, be it for IC or OOC reasons.