Well, I can't exactly say that I like having to press A to open doors now, but that's not too bad. Sun's walking animation looks dumb. That aside, it's pretty cool.
The people in the Alola region actually seem like people who live in Hawaii, and the new interface is really intuitive. You can no longer use the D-Pad to move (or so it seems, unless there's movement stuff like in XY), but I never really used it anyways. Kukui doesn't seem like a professor, and that is cool by me. I kinda lol'd when he said he lets himself get hit by moves to gauge their strength, especially since he has abs to prove it. That's about as far as I've gotten in the demo. For the most part it's impressed me.