This sounds like a one-sided personal feature request list. I don't think these feature ideas are even insightful. Last.fm's killer feature is scrobbling. It's

This sounds like a one-sided personal feature request list. I don't think these feature ideas are even insightful. Last.fm's killer feature is scrobbling. It's almost a diary of my life through music. I'd continue to use Last.fm even if all it did was provide stats.