MOTB is actually the only example of a stand alone high level campaign that actually worked. but MOTB is very different from BG3 in terms of tone.
And theres a reason its an expansion for an already existing game: it takes a lot of risks for a standalone game also id say waht makes MOTB good is not the fact that ts high level but that it has a lot of very interresting ideas and a c ool ass world
