How about Phillips CD-i?
bursts out laughing
But seriously, since it was a product of a failed partnership between Nintendo and Phillips, and it had those supposedly terrible Zelda games that I still want to try out, I'd like to see it on there.
Using Turbograffix as a template, it doesn't seem like SEGA CD and 32-X would need their own system listings as such. They could just be included with the main system like the TG-CD is. I would like to see their games added, anyway.