I see your point, Keystorm. If you are only using existing space and not creating any more, then what is the problem? Perhaps if you offer nicely to recode the page they might let you
however, if it was my choice, I'd say no based solely on the argument that if you can't manage to convey what you want with the existing limit, you will probably be no more successful with an extra 25 pixels.
If it really bothers you, try making your avatar 150 pixels high. They don't have a limit on the height.
Edit: No, I guess it doesn't work