How about upping the allowed avatar size? It's easy and done with only a few clicks of the mouse right?
The avatar sizes are restricted to save space and allow faster load times. Theres alot of stuff that the site has to load as you can see and upping the avatar size will make the site load slower.
Meh, I've been on other sites that allow larger avatars and doesn't slow it down one bit... Just sayin'... Now that I look, 100.0 KB is pretty decent... disregard this thread please...