I read the wikipedia article on the SNES CD-ROM System, and one thing I'm not sure of is whether any new capabilies are brought to the platform besides the expa

I read the wikipedia article on the SNES CD-ROM System, and one thing I'm not sure of is whether any new capabilies are brought to the platform besides the expanded capacity of CDs vs the cartridges, or the ability to play CD audio. The Sega-CD brought additional graphical capability to the Sega Genesis. It'd be really nifty if this did similar. The Sega CD brought the Genesis' capability closer to the SNES. Wouldn't it be cool if this brought the SNES' capability closer to the Neo Geo? That could make for some very tasty homebrew games. I wonder, would it be useful to have the higan developers to get their hands on this thing?