Oh my goodness, there's so many suggestions. xD; A lot of them are great! But ... I stick to my original opinion that it's gonna look really crowded and overdone if we add too many. x.x;;;
Sorta like this random forum I found for an example:
Radiant MB - Powered by XMB 1.9.5 Nexus (Final)
O_O ARGH~ I mean, COME ON. I've been on forums with that many categories before, and after awhile I just stop visiting --- It gets too overwhelming. It's like, WHERE DO I POOOOST?? T__T~