Nooo, they ruined Traverse Town Music? I still haven't got my hands on the game but I hope T-Towns music is not unbearable. The change might be because of the TWEWY characters. From the images I've seen, their homeworld is T-Town (In the dreamworld anyway)
So, that big open town really is Traverse Town? Is that only for the Dreamworlds, or the main world? I'd hate it if it replaces the music from the old one, as it was perfect for a small town like it.
You haven't played it yet? Well, there's a demo of it on the US E-shop now.
From my impressions, it's pretty good. The graphics are really well done for a 3DS game. For example, in the tutorial, you are standing on a log raft, fighting Ursula, and around you, it's stormy, you see waves moving, and rain is falling down on you. And with 3D on, it's freaking FANTASTIC! The game also seems fast-paced, with the new free-flow command.
As for the bad, well, your monster partners don't seem too useful. I was the only one dealing damage. Another is the camera (which is also one gripe I had with KH1, and all the handheld games so far). If I want to look at a 360 degree angle, I'm forced to buy a Circle Pad Pro.
I just hope that when the inevitable PS Vita KH game comes out, I'd be able to look in all directions thanks to the only console with 2 analog sticks (the 3DS doesn't have a second analog stick to it, which is why I'm not counting it as one)