Actually you're not the only one. I've been thinking about adding that.. something like... "all themes by this user" and /or "all screenshots by this user".

I was actually going to add that to all the other sections as well (at least most of 'em), whereby when you're looking at a theme/screenshots/downloads...whatever.. you have the option to view all the submissions by that particular author/user.

This would enable the user/author to have more control over his/her submissions, edit/update .. whatever.

I have couple of other ideas as well, my only enemy right now is time.