The previous thread on this game (see link above in the top post) also turned heated as well. I'm not quite sure why this particular Proto insights so much more controversy then most others, but that does indeed seem to be the case.
But I do want to stress one point here that is a matter of fact. The rom for this game was indeed "released". Yes, it does utilize unique architecture. And yes, it was a very small run of carts that were made available. But, it was "obtainable" & "purchaseable" in the past.
Therefore, there is nobody to "protect" here (investment wise) or (copyright wise) or any other auxiliary dynamic which creates complications with this game. Only the "necessary tinkering of an educated and/or technically proficient individual" is what is required at this stage. That is the ONLY limiting factor at this point in time. With that, the rom could be extrapolated from the Melody board & then modified/reworked to function with harmony and/or more "mainstream" bankswitch architecture to allow for a more traditional & larger controlled community release and/or public rom dump.
Worth reading IMO: