Here is a full project page for this idea, containing notes and sketches: https://www.mediawiki.org/wiki/Growth/Mentor_dashboard
Per discussion with @RHo. This dashboard can mentors allow to:
- view activity of their mentees
- view list of their mentees
- view mentors' stats (I mentor X newbies, and they made Y edits, with Z pageviews)
- ...?
There are work-in-progress patches for this feature, begun by @Catrope and @Tgr: