I'm actually surprised Catacombs 3D doesn't get more attention, since it seems to have many of the same conventions in place. True, it was only EGA, but playing the two back-to-back left me thinking more of their similarities than their differences. In any case, Wolfenstein 3D is definitely a more appealing game theme and graphic wise. The connection to the Silas Warner classic probably garnered a lot of critical attention from the right people back then, too.
I may end up trying to do some kind of DVD thing at some point. That might be a fun summer project. Still, I'm guessing I'd sell something like 50 copies or so, and that's probably not enough to cover the costs of making the DVDs. I'd be curious if anyone else has done this and broke even on it.