Just set-up a small e-store with a few custom designs, all assembled by hand(!) in Canada. Two Leonardo-compatible boards, and a bunch of other boards/shields.
See: http://www.cal-eng.com or soon; http://www.cal-eng.ca
I've also added a fairly comprehensive tutorial on the Leonardo HID mouse and keyboard routines. By poking around USBAPI.h, I think I've iced the mouse functions, but I have yet to figure out the syntax for using the KeyMap/keyReport, to allow the use of modifier keys (I think it uses keyboard.print() somehow, but I just don't have enough info! Any ideas?) See: http://cal-eng.com/?page_id=579
Very cool, indeed!
I was thinking that you could also offer in your online store the vinciDuino, a Leonardo Clone, with the same pinout as what Leonardo will have in an Arduino Pro form factor. You can download all the information (CAD, gerbers and component list) from here: https://bitbucket.org/fmalpartida/vinciduino/wiki/Home.
This board should complete your Leonardo compatible board offering.
As member of the vinciDuino team, you are more than welcome to all the information.
I like the site, I hope you do well with it.