I feel like we already have enough abstractions in this space. Having any constraints at all in your tools is actually a good thing. PRs on top of ordinary git was a good step. This seems like one too many.

I honestly don't even get the PR addiction. Github has shaped devs workflows way too much. My best experience with git was when I realized that I can just have an blatantly simple workflow and explain it even to the junior-est dev in a few minutes. The reliance on github is somehow telling me that people stopped thinking about things they can actually control.