I haven't read through all your summary yet, but I gotta say:

I feel free to enjoy it without reservation, because the original game is still there to play, unchanged. And because Squenix dedicated it to the fanpoodles. ;D

thank you for being one of these people!
This is exactly how I feel about the compilation and I feel super isolated from most other "hardcore" fans because of it, but I also can't stand Compilation only fans for obvious reasons. ;A;
FF7 is always FF7, and the new stuff is just new stuff, made because we loved it so much. *A*

(But lol, I'll be really surprised if the fandom is actually influenced by MCR in any noticeable way like people seem to think.)