Good right up about your thoughts. I definitely want to play it, but I don't have a PS4. Here's hoping that they port it to PC!
I haven't played it, so I can't speak for the game itself, but... Tetsuya Nomura is batshit insane. I loved the Kingdom Hearts series, have played every game except KH3, and he has made it an absolute jumbled mess. I don't mind a convoluted storyline, but it at least has to make sense. Kingdom Hearts has slowly been falling off the rails, never provides any resolution, and it just all over the place.
I also think Crisis Core was hurt by his creative presence. Great concept, but the semi-retconning and inclusion of insane story elements (Genesis and Angeal and all the weird clones) just hurt the overall product for me.
I love Nomura as a character designer, but as a storyteller...? Not gonna lie, I think he's a hot mess. I say all this to just say that I worry a little about FFVIIR having a similar fate. I don't mind it changing up events with a new "what if" mindset, but if it goes into heavily convoluted storytelling territory... oy vey.