I find myself hanging around Hyrule Castle a lot because I love the music so much. I also like the music at Rito Village (which shares the same melody as Dragon Roost Island from Wind Waker.) I agree that I wish the overworld had more music (and I’m a huge fan of film/tv/game soundtracks), but the game is still wonderful as it is.
Having played Breath of the Wild for 290+ hours (according to my Switch) and having completed all 120 shrines and destroyed Ganon on both Normal and Master Mode, I still can’t say where it lies on my list of favorite Zelda games. Its gameplay is almost incomparable to the other 3D Zeldas for a myriad of reasons.