I have a confession to make. My local TILT arcade had a MvC2 for sale for $295 around Christmas time. I stripped out the Naomi system and sold it for $250. I promptly installed soft15khz-enabled MAME with Mala and found a Naomi emulator for MvC2. I felt a little guilty selling the NAOMI system, but in the end, if that's the only game the machine could play, I wouldn't even keep it. As it is, the machine is getting play every day. On the rare occasion we fire up MvC2, sessions are short. The graphics are great, but the gameplay seems that whoever buttonmashes harder wins. I'm pretty good at the King of Fighter series and I just can't seem to get the hang of MvC2. I've won seven or eight matches in a row against the computer and still didn't feel much accomplishment.
I'll keep trying.