I've always been amazed when i get a new "seasoned" project manager and they try to really work on making all the tracking as efficient as possible so they have tons of metrics.

...and then nothing happens. We don't look at projects and tasks and figure out which work would be best for which team members based on past experience. We don't do any sort of optimization. We just track "velocity" and our estimates on release end up more dependent on how new the tech or the concept is (not knowing what we don't know) than anything else.