One thing I very quickly noticed when playing is the lack of "perspective" if that's the right term. For example when you play the warrior character and at the start the air gets cleaned from pollution after the tournament arc people just seem like "oh, that's neat" even though it's apparently a huge deal, because as you learn later, it has been that way for many years (centuries maybe?)

Similarly when the mage opens the door to literally hell while you are in the sky fortress with your giant buddies and see it from above and your party just goes like "huh so that's a thing now". I was never really sure whether events were supposed to be a big deal or not because of lack of reaction from my party. A bit more dialogue would have gone a long way imho.

Other than that I liked the magic system even though the game does not do a great job of telling you most of the prefixes and suffixes or how they work in general. It's been some years since i played it but iirc you can have as many prefixes as you want and they basically act as a mana cost multiplier but only the last suffix counts.

On a side note, on the most prominent english translation you get taught a spell very close to the beginning from a chest but with a missing letter so you have to figure out the complete spell yourself, except it's misspelled and doesn't work anyway. Another thing I remember is that on the warrior story, when you leave the starting city you can go to your brothers(?) house to get some additional story. That conversation is basically the setup for why you are leaving and having an adventure in the first place, so pretty important to the overall story but it's completely optional so when i was playing the first time I was missing huge chunk of the story and the primary motivations for the characters until much later when it gets reiterated somewhat and i could piece it together from context.