Bumping this up thanks to server transfer efforts that would allow us to do this, and also due to a couple of wiki incidents in the past (even though none happen now because nobody edits it apparently
).
We could do this using SSO that links up to aw3. aw3 would not allow SSO unless your account has a wiki approval flag in the database. This would also allow us to prevent users from editing the wiki if banned from aw3, though we might just use shared tables for that.