ProfileMenuItem is robust enough we could look at allowing administrators to customize user profile links to other applications, though this is probably blocked by allowing MenuItems to be dynamic based on the Object (also potentially needed for Projects). Once we have that though, this should be trivial to support.
Sometime in the past year, the link to Revisions was removed from the left side of a user's profile page. I tried looking for a relevant task or changelog but was unsuccessful.
As a user of an install with a many to one ratio of commits to diffs (most done automatically in other random repos), the commits link isn't very useful to me. Most of the time I'm looking for context given in the diff itself during review. I know it's possible to just search the user in differential advanced search, but I'd really like that link back or context as to why it was removed :(