Hi fibrewire!
Just discovered this topic. I, also, would be very interested in reproductions of both the Corvus HD interface and the ADS Integrator board.
Personally, I'd love to be able to use Corvus 8" DS/DD external floppy disk drives with my Atari 8-bits, as well! Perhaps someone could duplicate/integrate the functionality of the Apple II Corvus FDD interface board into an Atari interface...