@King Kindred Hmmm, i see what you mean, although i think people probably would have prefered the Maleficent angle to be played into more. I mean, the first game is the most coherent because it plays with familiar characters with a simple "Bad guy wants to get the maguffin and take over the world" story. The Organization, as Bacon said, are mostly intollerable as people, and yet the game still treats them as characters that you should like.
I think trying to expand the Disney villains roster would also have actually given you in-game reasons to be visiting the disney worlds. I mean, everyone agree's that one of the biggest problems with KHIII's story is that, despite a lot of the worlds being fun, almost none of them actually play into the wider story or have any lasting impact. Maybe even bringing in some of the other Final Fantasy villains would have also done some good. Would loved to see my mans Kefka serve a role in it.
And i think that that's the franchises biggest failing as a whole. It's whole premise only exists in that first game. "A crossover between Disney and Final Fantasy!" when that barely ever actually happens after the first game. I mean, Squall and his gang pretty much disappear after the first game, only showing up briefly every now and then. Vivi and Setzer show up in 2 in glorified cameo's. Zack has a glorified cameo in BBS. Cloud and Sephiroth keep showing up for cameo's across the games, but they only ever serve as window dressing to what's going on around them. The franchise is far more focused on its original characters. Now, wanting to focus on original characters isn't a problem in itself, but kinda is when we look back at that tag line and realized that a good number of the audience did not sign up for that.
Now, i think that it'll work in this, because, we don't have the problem of having to sell this story to a wider audience. The organization being made up of evil versions of the PC's will absolutely work. When i ran my campaign, my version of the Organization (Or at least, the team of bad guy Nobodies i had running around) were evil reimagnings of Disney heroes which is why my party kinda were able to get emotionally invested with them, even if that emotion was "FINALLY, WE SHUT THAT BASTARD UP!!!" But i could tell they were kinda digging fighting an evil Aladdin and evil Arial, because there was that inbuilt familiarity.
Anyway, i'm just rambling at this point. I'm gonna go to sleep and hopefully come up with a way to help make this work better than the games when i wake up.