Count me in too, I'd like a board that is at least partially assembled (SMD components at a minimum). I like the idea of making the board miniITX sized, but it's not that important to me because I'll probably make a custom case for it.
If you sell unassembled kits, it's best to include all the parts because buying parts in small quantities is expensive. If you buy them in large quantities it will save money for all the buyers.