I agree with the others. You've proven you can make quality cases, so teaming up with one of the FPGA based solutions (ie Natami) and delivering a nice looking case (A1/3/4000 copy, plus keyboard or case to house an a1200 keyboard) seems like a realistic and achievable project with a reasonable expectation to make your minimum order. Perhaps a changable rear plate could enable the case to be used for more than just the Natami.