As a Minimig-ARM-4MB owner/user I have to say that if you update your 2.0 board to incorporate all of these features then it would be one killer games machine.
Apart from the S-Video out and the nicer board design, there's not a good reason for me to upgrade to one of your boards, but you can put my name down for one anyway and I'll donate my old Minimig to my kids.
One question though, is there any way to incorporate a printer port so that the Minimig can use word processor software, etc without doing a serial link to a PC?
Regards,
Darrin