Is this project still on? I hope so. It sounds exciting. I just posted a message a few moments ago about an idea of a 'new' "Atari" computer that will run all platforms from 8bit up to Eagle. The first 'new' "Atari" computer to finally surpass the all the old hardware. Not just simply further the last one (Falcon), but to improve and unite them all under one hood.
You could bring out all the old 8-bitters still interested, and then they will also get to be introduced to Falcon/Eagle, which they would eventually end up adopting.