Probably expect some things to not work, hopefully subsequent updates smooth everything out since this is a return update for content. Might be worth reporting it, though.
Not necessairly, either they are placeholders, or they use AI to make the task of making general designs for the characters and backgrounds easier, if they animate them properly they can still look as good or even better than hand drawn stuff, what could be better is a jump to a different engine, say Unity to enable option to use Live2D for animations or even the Unity's built in animation tools to flesh out the simulation and interactivity aspect, but who knows what they'll be able to do.
It's only for the backgrounds. I think most of them are real backgrounds with an AICG layer on top of it. No big deal to me.
Same
Yeah it happen to me twice after leaving the message here
