I kind of liked the Great Crystal in a way in which I didn't really mind it. When I first came across it it was fairly easy to navigate because I just went south until I found the next cutscene. It's also pretty simple to find what you're looking for using a map online, at least it was for me. The only problem I've ever had with it is that one time I was trying to get to Excalibur and I think I was overwhelmed by the monsters who kept beating me. Admittedly, if I didn't use a map to get to Ultima or anything else in there I probably would have split the controller in frustration. Also, it was a pain to get there since you had to go through Giruvegan every time you made the journey.
Honestly, though, whoever made this dungeon must have been out of their mind.
Honestly, though, whoever made this dungeon must have been out of their mind.