I'm noticing that you're sporting a fall color theme, which in itself is very well put together, and leaves(ha! ) no question as to what it's supposed to be. However, unless your RPG is always set during fall, or it is fall now in the RPG, I would either suggest seasonally correct skins, or going more towards a general "woodland" theme. I would stray away from the yellow on orange, as that is hard to read, and also change the yello cell highlight, as that is impossible to read at all. As for your c-box colors, same thing. Also, your titlebg and catbg purple color doesn't really work with the rest of your skin, I would keep to the purple color in your background image.
Graphics and images:
I very much like the banner at the top of your forum, it is a nice welcoming image. I like your background image as well, but I would center it, and continue the solid purple color in the middle to the outside of the yellow design instead of the titlebg purple color. I would also suggest changing the red behind your leaves in your on/off icons to the same red as your boards.
Forum topic/theme and board content:
It can be difficult to judge RPGs, as they only appeal to specific people. But, you look like you offer a wide variety of boards for people to post in. I would suggest hiding your staff board, as regular members do not need to be made aware of staff discussions (obviously the positions board would have to be moved). Also, I'm finding that some of the staff posts, unfortunately, are striking me as somewhat unprofessional.
Coding and odds 'n' ends:
Since you have your news fader on, the first thing that I would suggest is to remove the scrolling news bulletin marquee, as the newsfader is your news bulletin, or should be used as such, and the extra section on the bottom of your table, set the way it is set looks more on the messy than convincing side. Also in your table, you don't need to advertise that you don't have Gmods or mods, unless you are looking for some, in which case you might say "looking", and/or include a link to where they might apply. And, overall, I would resize your table to be the same width as your boards, and make one continuout title bar at the top of the table.
Some good points, but I would definitely take some of the things that I mentioned into consideration to become a "great" site.