There’s one rather important oversight: UGC. Either the microserver admin doesn’t get to control UGC (forum posts, user creations, custom names, etc.), that needs to be split into separate databases, database columns need to be added for which server the data applies to, or everything runs on a separate DB (lough accounts would still need to be separate, in order for mods/admins to be selected based on server). This is something where the DB infrastructure could be built to allow this, but at the moment, it isn’t.