I am mostly interested in this as a pass through to play SNES games on a Super Famicom. But what's this I hear about Roms interacting with the carts? Like use the Japanese Rock Man X3 cart to play Mega Man X3. Can't do that with an Everdrive or SD 2 SNES. Then there is this feature to dump and patch ROMs....hmm interesting... I'm aware it's not perfect but this thing is interesting, at $60 it'd pay for itself if I just put Hagane on it.