This is just a suggestion for a convenience feature. It would be nice if we could collapse the forum categories that we don't use. For instance, I visit the Software Development forums and the Coffee House forums, but rarely anything else. I find myself having to do a lot of scrolling just to switch between the two and see if there are new posts. It would be very nice if we could turn the forum list for, say, the Tech Talk category into just a header. That way only the most relevant forums are visible and extraneous forums that we don't use are hidden. For example, I could probably fit both the Software Development and Coffee House categories on one page for quick viewing if the other categories turned into just a header bar.
Yes, it's a selfish request, but I do think that there are benefits to letting everyone customize their views to their interests.