I doubt many will be amazed by C4 support but it was indeed something that was unemulated on Macs until now.
I was really happy to see the SNES9x Custom team taking DreamSNES's C code and bring us C4 support that Windows always had.
I'm curious though...what other games make use of this chip besides X2 and X3? To my recollection, those 2 MegaMans were the only games to make use of it.