Yeah, I don't get it either. It's very run of the mill in what I played. Perfectly mediocre JRPG. Xenogears and FFIX are really fine examples of the genre. Xenogears is incomplete and a remake could complete it. I can see an argument FFIX maybe doesn't fully need it. Xenogears I believe does.
Yes that second Disc in Xenogears was flat out rushed. FFIX was the most polished of the PS1 FFs, it could be remade, but only a fresh coat of paint maybe. Somethings should be left untouched, but I wouldn't mind something like the old RE GC remakes, with redone HD backdrops and most of the processing power going to character and overworld rendering. Honestly, I think Xenogears has the most potential.