My only real wish for change at WebmasterWorld is that some system be put in place to devalue less informative posts or value the more informative posts. Nothing frustrates me more on WebmasterWorld than having to click through pages upon pages of posts like this:
"My site saw a decline"
"My revenue is down"
Perhaps you allow moderators to hide such posts? Or maybe users can "like" good posts and "dislike" bad posts?
Another idea would be to create an authority status for contributers who routinely post informative and insightful info. As an example call it "Supreme Court" status. Then allow users to opt in to only view posts from Supreme Court contributers. This makes finding good info easier for users and provides an incentive for contributers to post better info instead of just clogging the forums with inane and useless comments.
All that said, I love WebmasterWorld and really have no complaints. This is just a suggestion since you asked about it.