I've been thinking of something that, in theory, sounds cool but I'm not sure it would work out in practice. The idea is that users (probably not all, maybe more mod-types) get their *own* worlds. Worlds where they have uber modness so they can change what they want in their world. Of course, for people without this privilege, they'd have one normal world where people build as usual. I think there are several advantages/disadvantages. Of course, as an advantage, it would be cool but there would also be problems with "Why not just make your own 1-person server"... Well, use multi-world warps (are there any mods that support that yet, anyway?) or more simply, world teleport commands (like those found in Multiverse). I know this whole idea is sort of jumbled, but I hope you get the gist of it. One major downside seems to be that it would create a massive amount of lag, but I'm not sure because I'm not sure how CraftBukkit handles multiple worlds. Maybe it's just like two different people in different areas of one single world, where different chunks are loaded and act like two far away people act on the server load. Aaaaaanyway... What do you guys think? I think this could at the moment be easily implemented with one of the multiworld plugins and use Permissions for the per-world mod status.