I tried to suggest a while ago this thing they did on my old forum, where the signatures only showed up on the last [or only] post on a page. So instead of scrolling down and seeing image after image after image after image, you just saw posts until you reached the end. 

I was laughed at. 
"You can disable signatures" blah blah blah. 
I don't want to disable them, but holy shit some of the seizure inducing shit people put in their sigs...