In no particular order...
1. Reform the moderator concept in general, including:
- Reduce the scope of what can be moderated to cut down on over-reach
- Require better transparency as to some moderator actions
- Listen and respond to constructive feedback about moderator actions and remove the rule making it a thought crime to discuss or comment about moderation (assuming it is respectful, civil, etc).
2. Eliminate TalkBoard. Other than arguing amongst one another and applying red tape to simple matters like updating a forum name, it's not clear that this body is necessary in 2016. No other online forums (on other subjects) that I belong to have anything like it and they seem to do just fine.
3. Auto-close (to new posts) non-active threads after a certain period of time. Seems to work well elsewhere on some sites. Admins/mods could re-open manually if requested and deemed appropriate.
4. Make wikis visible on the mobile site.