What's the problem with larger sig fonts? It takes up the same space as if I were to have two regularly-sized lines of text. So if you're not saving any space, why disallow large font?

It's like saying "You can only take up this much space if you have two lines of text. If you choose to make your sig shorter, then it has to take up less space than anyone else's." Just doesn't make sense to me.

(while we're on the subject...) Why doesn't my sig display, all of a sudden?