The official YouTube Music app lacks advanced features that serious listeners want, like sophisticated playlist management, scrobbling, or lossless streaming.
Build a client that adds unique value through features like AI-powered discovery, mood-based playlists, or integration with music production tools.
Monetize through a small upfront fee or premium features, avoiding ads that would violate YouTube's terms.
Start with a desktop version before tackling mobile platforms.
API instability and copyright issues pose significant risks.