I started playing it recently for the first time in 20 years and it feels a bit like a mixed bag to me. The dungeons are downright bad and even with the green arrows everywhere it's confusing to see where you can go and what you can interact with. The room layout also doesn't make sense in the dungeons with how they are separate screens of different sizes with pre-rendered backgrounds. At the end of disc 1 I ran around for almost an hour looking for a way forward and the solution was to go back into one of the elevators since you did not get the option to go to floor 4 when you entered it on floor 2 but you did get the option if you entered it on floor 3.
I also dislike how you heal by defending since you can't really heal in any other way because of the limited inventory space. This leads to you ending many battles by defending over and over to heal up which drags down the tempo.
The rest of the combat is pretty good and the Additions make it a bit more engaging than your average JRPG combat. It's a bit simple apart from that though with little in terms of customization and magic. The story is well presented and has started to get a bit more interesting at the end of disc 2 and the world building and characters have been OK so far, even if the whole Dart and his little sister thingy is a bit dumb and anime. Good music and some of the pre-rendered backgrounds are gorgeous.
Not sure this could become a great game with a mere facelift tbh but I'm only at the halfway point. Nothing really stands out as exceptional apart from production values and that is compared to other PS1 games.