Seen a lot of people wishing there was more overworld music, so I'm going to voice my opinion that I like the minimalistic approach they've taken. The lack of music in the wild spaces emphasizes the world and the music's sudden presence in battle or near important areas like the Temple of Time emphasizes those more important moments. Though I do hope the towns still have some fun, boisterous themes or whatever. If the silence emphasizes Link alone in the wilderness, a place with a lot of people should be louder and more musical.
I couldn't agree more with you.