This coincides with repetitiveness but I will say the dungeon design. It is atrocious in this game. Barring the linear "yellow brick road" dungeon design of FFX and XIII, I can honestly say that FFII has the worst dungeon design in the series. If it wasn't so easy to bork the gameplay, then the game might have been salvaged. Instead, most of the dungeons are pretty much meandering mazes with huge encounter rates, involving you searching through doors that 90% of the time lead you into a barren room which you are transported into the middle of instead of just the doorway, and said rooms have an even higher encounter rate than the normal dungeon. Even with high powered party, the dungeons and encounter rate come off more tedious than challenging like in say FFI and III where it is very easy to be killed by even normal encounters if you are just haphazardly paying attention.

As long as you build the characters along the way instead of just power grinding early, then the dungeons are not so bad, but if you are playing Origins and want 100% on Monsters and treasures, this game will drive you mad...

Other than that, I don't appreciate the limited Inventory made more atrocious by Key items taking up permanent slots. Where's the Fat Chocobo when you need him?