It's a cool idea, but it's a big price point when you consider:
- A huge percentage of Neo owners have multi-slot boards, so we can already have multiple games loaded in our cabs.
- There's a proliferation of multi-carts that, while certainly inferior to what's proposed in per game quality, already give us a cheap option to cover multiple games in a slot.
- Even with the rising price of MVS carts, I don't think many (any?) loose carts are already $400. If anything, it would help me feel better about spending more on some of the pricier originals.
I think there's a Neo market that just likes owning all of the new homebrew stuff, just to have absolutely everything Neo ever. I think this affects the AES crowd more than the MVS crowd. The MVS/Arcade guys seem to be, as a group, more players than collectors.