It makes the initial bisect easier and faster as well, because every commit is a fully working one, and there are no trivial commits that still have to be rebui

It makes the initial bisect easier and faster as well, because every commit is a fully working one, and there are no trivial commits that still have to be rebuilt and bisected over. Plus all the commits are found in the order they were introduced to master, rather than randomly interleaved with other feature branches that were built at the same time. Personally I would think any kind of branch cleanup to get the history of a feature branch into a presentable state is a significant price to pay. I've only had to restore a PR branch a handful of times to find the particular culprit.