Awesome list, I have a few of these already, but didn't know about Spin Doctor. Man, I loved that thing on my old Performa 631CD
I'll definitely be buying that to go along with Stuntcopter and Glider Classic (which also has a Mac App Store version too)
As for additions, the only thing that comes to mind are classic games that saw Classic Mac ports, like the Secret of Monkey Island 1 and 2 games from Telltale games. They are HD-ized, but have the ability to swap back. Also, Duke Nukem 3D, Doom, etc. but at that point they aren't so much Mac Games as games we saw on the Mac. I tried Wolfenstein 3D, but it has different music and voices (they may be the PC voices, but not the original Mac German voices I grew up with, then found out weren't the standard voices...)