Oh yeah! It's definitely cool and I make sure to do it on every replay. There's some other stuff too! Main thing is if you get the chance to do something outside of the implied order... do it. You will probably be rewarded. Like how Agrabah has citizens if you don't leave immediately.

In Kingdom Hearts 1, there are no Dalmatians in Atlantica. Also if you complete any world before wonderland, Snow White is the captured princess in the scene. And Riku won't talk or help you in Pinnochio if you do it after he's been possessed.

I have said this before, but eliminating programs that teach a lot of students but don’t have many majors is like a restaurant not buying flour in its grocery delivery because people aren’t ordering flour on the menu.