If Square Enix were to change up how the cinematics (this means Opening, Mid-Game and Ending) would play out, what if they were to change up it's style as the current CGI style is pretty much close to how the game will be (thanks to the Kingdom Shader and an increase in graphics).

i'd prefer it if they just stuck with the current style. nothing wrong with that.

Considering 0.2 which is using KH3's engine will have an opening CGI, I doubt they will change KH3's. Nor would I want to. The gameplay itself might look as good as or even slightly better than the CGI cinematics in KH and KH2 but the technology they use for the cinematics also moves forward, the one we saw in the recent trailer looked so much better than KH's and KH2's, graphically speaking.

 

In any case, I don't think Square will stop using CGI cinematics anytime soon. Even FFXV has them.

It will be as it is now. No need to change it.

I want Kingdom Hearts III's opening cinematic to be with CGI, just like all the other Kingdom Hearts games that have come before!  And if 0.2's opening cinematic is anything to go by, then Kingdom Hearts III's will be simply spectacular!

CGI, It looks amazing and besides, as much as I'd love an opening like what was going to be the cartoon, it would probably just sadden me that we never got one and might not ever get one, I still have hope though.