It's not often that I make it onto the Showcase part of the forums. And that's a shame. There are so many cool customizations of your themes Justin. I think you should think about making a page where future (and existing) users could see what is possible with this great framework. Kind of like your page-thumbnail-archive.php template maybe even with an opportunity to rate them.
I know these wouldn't necessarily be downloadable themes, but it would be great inspiration for new as well as existing users to see this.