I largely agree with you, but there were two huge problems with the game. (1) Dominant strategies were very easy to find. By about level 30 I had figured out a set of spells that I could basically infinite-combo anyone to death with. (2) I reached the level 50 cap very quickly, and soon after that exhausted all other non-quest stuff you can do. So I was left with pretty much one option: continue the main story quest. But without the carrot of leveling up, I completely lost interest in the game about halfway through the story arc (judging by the amount of the map I'd explored) and haven't picked it up since.