May 25, 201213 yr Most everything that happened in Days wouldn't have happened and the entire storyline from Days on would have been altered in some unimaginable, mind shattering way and time itself would have ceased to exist.
March 15, 201312 yr The whole story of the kh series would be changed. Sora could still be sleeping in DDD if that were to happen.
March 17, 201312 yr Could be interesting, it all depends on how they handled the changes to make it work. There's a number of things they could have done to fit Xion in there.
Think about it