Wouldn't be a bad idea. How can that be implemented though?
I don't understand why this is a huge issue? Pointless posts would seem more worthy of attention. Also, it would seem like people's signatures would get rather lost and we would have two threads a week on why is person x's signature showing, but not mine.
It's not an issue, just that it may help to reduce clutter; just seeing that we're being asked to shrink signatures and all (which I'm fine with).
Signatures should be restricted to Size 1.