What features would you like in MyBB?

[Firefox Wins]

--> Semantic Web Support:  i.e.
WP Calais Auto Tagger
The plugin performs semantic analysis of your post text and suggests tags for you.

--> Wiki-style community editable posts with version history, in selected forums.

This --> MyPlaza 1.6

--> Users in usergroup '__' are allowed to create new groups.

--> A real, modern API (rest?)

--> For admins only: PHP in posts.

--> SSL logins w/ a smooth transition to and from HTTPS.