We now have a new building plugin that is available to all architects and admins; Build Commands! This is a world edit script that adds a ton of new options and features. Because it is just an extension of world edit, you still use //undo to undo any commands. You can use /cs build to list the main features of the script, and /cs build commands to see the command list. PMC Post - http://www.planetminecraft.com/mod/build-commands/ Video Tutorial - Enjoy.
Last time I tried this I had no perms (so guess is all archi's had no perms). I'm not sure if it was ever addressed