I really wish they'd replace the commit feed with a PR comment feed. I honestly don't care who committed what. I don't need to know about it until I'm reviewing a PR. The unit of review is the PR, not the commit.
I need to know when there are new comments on PRs I'm participating in. I need to know when a PR of mine fails the build. I need to know when a review is posted.
I don't give a shit when someone else commits to the repo. It's noise, not signal.