I'm one of the rare cases who actually didn't find the long arcs boring, but maybe binge reading had something to do with it. Waiting for each chapter to see little plot progress would be frustrating.
But I like how MC is rational, the quests are different and give food for some thought. It's not typical leveling and nakama power - there's real problem solving, moral dilemmas, war tactics, etc.
The art style plummets in season 2 but gets a lot better in season 3, just saying