As a consequence, I'm listening to my favorite artists less frequently, and haven't even thought about concerts, festivals, albums, etc.
A dumb but rich tabular music + metadata store would be a game changer. Add in tags and multi-dimensional ranking, and I'd be in heaven. Add an API, and I'll gladly pay $50/mo.
I want iTunes 1.0, but with the ability to sync between the cloud and all of my devices. With smart playlists that can operate over my tags and ratings.
That's it. No music videos, no real need for album art or lyrics, but certainly no UI removed for simplicity or dumbing down the product.
I want to index and traverse my music in my own way.