You don't necessarily have to 'wipe all the guilds out', though a fresh start could be refreshing. I'm certain suitable stories could be written as to why we would all suddenly move.

Maybe the Elves decide that it's their duty to defend their hunted brethren in Yew against the Militia and try to build a sanctuary there? With 'The Revolt' causing havoc in Yew, perhaps DOT decide to garrison Yew to 'secure the kingdom' (DOT & Grd are allies, right?) and perhaps merge/reform around that? Cove and Vesper (I can't remember if they are allied or not, been out of the community too long, sorry!) could have a settlement on the shoreline where they help the Revolt and generally try to cause Yew to fall under their influence? Could make it a long, long detailed 'plot' so it never has to end...

Just throwing some thoughts out