Ive mentioned this before, hope this will be added asap.
1. Flood Control
2. Assign Moderator
3. Kick/Notice Feature
4. Restrict using bold or caps.
5. Avatar display (turn on/off option for users)
6. Different color for user groups.
7. Ban Duration.
8. Right click user for options (send pm/wink/info/view profile)
9. Anonimity Option (Use nickname instead)
10. Translation of pasted codes, like for youtube url, the url becomes a video embed.