This is so strange, Flynn. I actually dreamed about Themeframe last night, and woke up with another idea: you host Themeframe on your site, and people can come to it and configure the options and be able to download the resulting code, which they can paste into their own copy of an "empty" version of Atahualpa. Maybe they'd pay a subscription fee for this service. Since it was a dream, I hadn't fleshed it out or considered the pitfalls.
So it's weird to come here this morning and find your new idea.
I think it's brilliant, even though I would probably rather have the full functionality in my own hot little hands. Maybe a two-tiered payment system, so I could pay more to have the full framework and still get updates?
How would this work on a Wordpress MU site? I'm starting one as we speak, a blog system for people in my community. I had planned to use Atahualpa as the main blog and also make it available to users as part of a suite of themes to choose from for their own blogs. It would be really super-cool to be able to offer Themeframe to the users and let them custom-design their own very individual themes.
However you do this, Flynn, you deserve any riches that ensue. From a marketing standpoint, do you think it might be good to offer the stand-alone version for a while, to build buzz?