The story is great, and the game does an amazing job at fleshing out Midgar and its inhabitants. The only major beef I'd have with it is the ghosts, honestly - I "get" why they were included and I can appreciate it but every time they showed up besides the ending they just dragged things out.

Battle system is, in general, Very Good, being able to incorporate the... thoughtfulness, I suppose, of turn-based combat into fast-based action combat. Still some annoyances (with ex. a lack of super armor on moves, which is annoying especially with MP-costing spells) but overall it's still really solid.