What's your idea?
For anyone who hasn't contributed to any modules or themes but has just participated in Drupal core, their profile page looks pretty empty and it doesn't show any mention about their involvement in core.
I agree with xjm here and quoting again:
A Drupalist's d.o profile is essentially his or her résumé.
What are the benefits?
Attract and motivate more contributors to core.
Who directly benefits from / will use this improvement? (target audiences)
Everyone who is currently contributing and wants to contribute to core.
Comments
I downgraded this to only
I downgraded this to only "Low" difficulty; I actually think this would be fairly straight-forward. There's already some code out there at e.g. http://stats.marvil07.net/drupal-core/ and http://ericduran.github.io/drupalcores/ to parse out usernames from the commit messages, we could borrow that and throw it into a hook, populate some database table somewhere, ta-da. :)
Yes please
This would also resolve the disconnect between people who contributed on patches vs worked on the initiative branches, so yes please :)
Social Reward System
I see this as crucial to community motivation. Big plus from me!