Shitty couple minute mockup of what I would like to see that I think is extremely feasible and not asking too much of Rooks.
Screenshots aren't screenshots 75% of the time anymore, so just call it images. Upload screenshots, art, models, etc. Just the same as people are doing now. We don't see a ton of new ones these days, so a simple 8 or so is enough.
Separating the types of forum posts would go a long way for getting people who don't want to see off-topic posts to engage with the site more. Those that do, get their own column and can click to the off-topic threads. There's already an [XI] prefix for this sort of thing in the existing design, so this should be relatively easy to do with the current site setup.
As noted previously, shouts are pretty garbo. There's a link to the shouts page already on the sidebar for people who want to see if any legitimate shouts are happening. It's currently wasted loading time for the majority of visitors.
It's truly a shame Guildwork was basically abandoned years ago. I'd love to see more items being tracked for achievement points and a better leader board system, possibly restricted to active players. I think people would have gotten a kick out of such a thing.