[Kingdom Hearts 2] returning to Hollow Bastion, I've seen the first mention of Sephiroth, along with Yuna, Rikku, and Paine, who (in a weird move) seem to be loyal to Malificent of all people.

Not sure why the developers seem obligated to include skateboarders everywhere. Maybe they wanted to make a Kingdom Hearts skateboarding spin-off and this was their attempt to make that happen?

Skateboards, I mean - I'm wandering through the construction area of Hollow Bastion and there's one that's just sitting at the entrance.

Next up is the Tron world; I'm glad I watched the movie recently.

Tifa just showed up, kicked a wall, and left. I'm not sure if she does anything in this game, or if it's build-up towards a subplot with her, Cloud, and Sephiroth that was supposed to be in KH3 but changed later when they stopped emphasizing FF characters.

Sora is now interrogating a computer about the whereabouts of his friends, even though there's be no way that the computer would have that information.