Secret episode info? Cool...The Realm of Darkness reminds me of the World of Chaos (Which I also sometimes call the Ansem Battleship).
Yeah, the first time I went through Hollow Bastion and the End of the World, I had some very tense moments. First time I saw a Behemoth I though "Holy $#!#". It certainly fit the description of an endgame world...Pureblood Heartless are always interesting, too. Darkballs are perhaps the most random enemy I have ever faced, and Invisibles...While 358/2Days did a decent job of making them tough, you had to fight multiple Invisibles in KH1, often 3 or more at once. It's been a while since I played it, but I can sympathize.
Chernabog FTW. I do hope we get some awesome Pureblood Heartless in KH3D, maybe even a few new ones. Now that I think about it, KHII was severely lacking in Purebloods. Speaking of EotW Heartless, you think they'll bring the Angel Stars back? As far as I know, they are the only light-using Heartless out there, and made for interesting opponents.