Well, I'm quickly curious as to whether you typed this either quickly or on mobile, just because it's unlike you to make grammar and spelling mistakes in a post. Anyway, if you don't know how to wpell a word, either don't use it or look it up.
Anyway, I understand what you mean about long signatures, not only do some clog up the page, but can also be very flashy and can hurt my eyes. No joke, there are ones that really kill the eyes.
As for my signature, obviously since its mine, I think it it's nine, I believe it to be the perfect size. It has my statistics, a thread or two I made that I want to draw attention to, and something I found funny from a game. I believe these can all be substituted with other media, but more than this is excessive. Not only that, but if there is more of a thread covered with signatures than actual content, either the thread is not pertinent enough to build conversation or the signatures are too long.
Maybe a little of both.
As for a solution? Well. Erm. No sorry I actually can't think of one. It's too specific of a situation in that the limitations for it are endless with endless amounts of different media that if a line is drawn it could become blurred.
Instead, maybe their should be a "turn off signatures" option in the settings?
-Demon