That's pretty cool, and the fact that some of the homebrew community has actually made demos that run on it is pretty awesome. It'd be great if somehow any in-development software made it out for this. I don't think there's ever been a concrete list of what was actually in the works, and how far along it managed to get before the project got canned. I know that Secret of Mana was supposed to be a CD game, and they teased a version of the 7th Guest in Nintendo power (which wouldn't have been surprising at all).