I'm kind of on this side of the fence too, though less for purist sake and more so there's more actual POINT to a 'classic mode' besides screen ratio and lifes, something I feel may have been more popular implemented as toggle options for Anniversary Mode. Otherwise I feel like they should have at least added more key differences between the two versions. Heck maybe they could have added that seventh emerald and Super Sonic as normal play elements of Sonic 1 for example. Anniversary Mode's meant to be upgraded after all, they don't HAVE to be accurate, that would be the whole point of having a Classic Mode. In terms of having the original ROMs, I feel the one alternative is maybe having a 'Games' section to unlock in the Museum, along with a few other games like Knuckles Chaotix and 3D Blast perhaps. As unlockables in the Museum, it would be made apparent they're not getting the same gloss as the main four.