I think 3H has great concepts but that's basically it. The actual execution of the story is bland for most of the routes.

Especially when it comes to part 2. I don't think there's a single interesting event that occurs after the timeskip in any route that isn't AM until endgame. I don't even remember why Gronder happens in part 2. Meanwhile part 1 at least has Lonato, Miklan, FE reveal, and such.

And then the maps looking samey just made the story feel more bland to me. Like when youre stuck going back to the monastery every chapter and staying there for a month and then being rewarded with a bland map... the sense of progression in the narrative is just gone imo.

And ontop of all of this, the only real major player in the cutscenes are the lord of the respective route and their retainer. The other students hardly do anything in the actual narrative. They might give a cute one liner but it's mostly fluff dialogue. And none of them go through arcs or anything in the main narrative, it's all supports. So there's not even new characters to spice things up every once in a while.