Ha that's cool. You're preserving an entire system's worth of games all by yourself!
I did some digging around on wikipedia and found a similar DVD system called Nuon https://en.wikipedia.org/wiki/Nuon_(DVD_technology) - which actually has an emulator for it
And a few more failed disc systems:
V.Flash (which we have 2 of the 9 cds dumped for the system here already)
LaserActive (which uses Laser Discs - part analog and part digital, I assume we would preserve the digital data for these here? Dumping might be super difficult lol!).