I think the graphical style will remain the same, but look a little smoother and more polished. The reason why it wouldn't look right for the entire game to resemble the CGI scenes is because of the human Disney characters. The in-game graphics are made to look more cartoony so the main original and FF characters can fit in with the human Disney characters. In CGI Sora, Riku, Kairi, etc. are made to look more 'real'. They would look totally out of place and awkward if the graphics resembled that and they were with a character like Peter Pan or Ariel, etc.
Once again, I feel the need to point out that the disney humans in the game dont always fully resemble their movie selves and still can be improved and fit in even if the backrounds had a lot more (small) details. that's a point I've been trying to make since BBS came out. Yes, the CGi look would not necessarily be the best choice, but we gotta acknowledge they're probably using more reference material than just what was done in the other games.
I don't understand why people complain about the Disney characters. Do they look bad in KHII and DDD? Noo...What's this 'if they', they already have and we already know how it looks.
KH2 a lot of ppl say looked kinda awkward with MDG, and for good reason. Here were 3 cartoon characters designed for economically sound short films done on paper, and now they're dropped into this nearly photoreal digital environment with more complexities than the ones they're usually in.
I wouldn't say KH3D's CG style was "poor". It was a different stylistic approach to doing the shading, and it fit the whole storybook + 3D feel Visual Works was trying to go for. SE has hit the point where they can get realistic but honestly the company needs to start taking a creative twist on things sometimes.
Bravely Default: Flying Fairy also had a more unique CG style, which was a nice breath of fresh air from the typical realistic look most recent Final Fantasy games have.
I didnt even get most of that when I saw it many times. I also probably didnt read the interview or article regarding Visual Works. It looks good, and I'd like to learn a little more.