What unreleased track(s) do you most want released?

I guess to the mods if you feel that this is meant for the discussion thread then delete it but I felt that since we are in somewhat of a lull in content right now, we could discuss what songs we most hope for a release.

As the title suggests, what Skrillex song/collab/remix that is unreleased do you hope will see the light of day?

Or, alternatively, what songs do you wish hadn't been released and/or do you find unsatisfactory?