I would love to see some theme options for the forums (the ability to change themes) along with some actual new themes. I'm also happy to help with that if necessary as well, if needed
Another big change I think there should be is the reoraginzation of the navbar (forums, bug reports, staff apps, etc. sections) as well as more updates to the update banner as well. The last update we had for it was about Probending and it feels like it has been forgotten about, yet it still takes up quite a bit of space.
One final thing I'd like to suggest is a reorganization or some additions to the current "forums". Right now, the only place new members can ask for help is the Shoutbox, Bug reports or General Discussion. I honestly think there should at least be a "Support" sub-category for all of our plugins so things are more organized.
Just my opinion though
Edit: I also think our forums could use with an update to pinned discussions. An updated FAQ would be nice, but I think stuff that is outdated from 2 years ago should also be unpinned. A lot of it isn't really valid anymore.