Do not worry me and the Mods are aldready ahead of that.
I submitted a pre-signature and avatar guidlines. They seemed to like it and now waiting for an Admin to approve it.
Also I have suggested the adittion of
Spoiler tags and Righty even said it was a good idea, but I havent seen it put in...
Edit: I suggested a max of 550x170. Anything bigger than that is just too big. I've worked with that on my previsouly made forums and it was fine.