We have estimation in place, and planning is done at a high level via Epics, but not at the granular level of "you can get 25 points done this week, based upon past performance" (yet).
Related: We have cumulative flow diagrams in place at the Epic level so that you can see where your bottlenecks are and visualize progress.
Suggestions are welcome on how to best add tracking to the system without it being too overbearing.
(I'm also a founder here.)