Sorry if this is poor comment placement, but CurseForge comments don't seem to be working right now.

Can you add biome specific cave ambience for lush, underground jungle, and dripstone caves? Lush caves could have wetness, dripping, frog echoes, bug echoes, and so on while dripstone caves could sound wet and drippy. A good example of a mod that does this is AmbientSounds 5. Since you already have sound files for frog variants and drips, maybe this could be a quick easy update to make?