Okay. here is my thing.
Can you make it Possible to make our Own Themes? and if it is already Possible, can you point me in the right direction?
If you're on Firefox, you can use the add-on "Stylish" to make your own theme for certain sites. I like this, because a lot of forums I browse have a blinding white background and it looks just awful *cough*Bungie.net*cough*, and there are user-submitted styles that are easy to find and download. Depending on how the site's coded, you can completely change the layout, too.
OT: I'd like to see a drop-down menu below a user's post, which can reveal/hide their signature at any time. Most users here have a billion gifs in their sigs, and while some of them are quite humorous, it looks painfully cluttered when browsing threads. If the site ever happens to have a population explosion, a Karma system with memeber ranks/titles would help to reward good behavior and discourage ****posting, provided someone doesn't abuse it with alts/their own little circlejerk group.
The ability to specify Avatar by URL to change one's Avatar would also streamline things a bit.