On this one forum I was on a long time ago, they had weird censoring, but lots of people used that to an advantage. They would name their signature on photobucket, for example, lua, which on another category would be Sparkle Magic!.
So they made another image named Sparkle Magic! and they instantly had multiple different signatures.

Could we maybe put something like that in, for fun?
Either, the ability to have different signatures on different boards, or have a word (Like sgnt) that would be, say, be censored to sgnt000 for general, and 001 for support.

Does that sound good?

I suppose you're asking for predetermined sig images (as per your board censoring suggestion), but you could use a site like ImgKK for randomly rotated ones.

Get some web hosting with PHP4 support. Google search "image roatation script." Upload script and source images to your web host. Set signature to script .php file.

Simple as that. No need for the forum to do something special to accommodate for one person's whim.

Just thought it would be interesting, thanks for the help.