Parker, there is no such animal yet. Kenwood released the Sovereign DV-5900M 403-disc DVD-Audio megachanger, and Sony will be releasing an SACD megachanger this year. That's it. If you look around, there aren't too many DVD megachangers of any kind on the market these days. I don't really know why that is. Pioneer, a company that has been very active in universal player arena, has completely gotten out of the megachanger game. Denon has no DVD megachangers on its range either. Matsushita (Panasonic) is aligned with DVD-Audio. Don't expect Sony to release any sort of universal player anytime soon.
Lance, fair point. I am in the middle of converting all the CDs in my CD megachangers to CD-Rs, so if the megachangers are stolen, I'll be out a lot less money. Of course, making copies of DVDs is not really feasible.
What I am meaning is that there isn't a need to have the video side of the player. So they could take out the video section and just leave the audio section ala the current batch of 400 disc CD players. Just add DVD-A and SACD to one of these and there you go. Just what I wanted.