I’ve played three time through Remake. First when it launched on Normal and Hard difficulty, and then again, last December in anticipation for Rebirth.
While I didn’t mind too much my first time, the game definitely has a lot of very slow sections. Like you mentioned, you are constantly forced to walk very slowly, wait for animations, etc. It really feels like Square tried to pad the game a lot.
I really liked the combat at first, but my on Hard difficulty it got terrible. I was always annoyed, that your other party members just stood around and never attacked. Rebirth fixed it a little bit, since they actually are doing stuff, just deal basically no damage and don’t get ATB charge. A few fights are also just terribly designed in my opinion, and Rebirth just doubled down here.
About things not carrying over, I was also a bit disappointed at first, that you basically have to start from scratch in Rebirth, but it wasn’t a big deal. The sequel has other, bigger problems, in my opinion, that drag it down.
The main reason I still like the game, are the characters. If not for them, the very first playthrough would have been enough.
Every one of those got confused about the title and thought it’s the new one.