I don't know -- these are fair points. I do know that when I was using GH regularly on a team where a number of people wrote clean history, the problems you me

I don't know -- these are fair points. I do know that when I was using GH regularly on a team where a number of people wrote clean history, the problems you mentioned didn't come up, not that I can recall. So for the 90% case, let's say, you can do clean history on GH and get the majority of its benefits. But yes, I'm sure it's flawed especially in workflows where those types of problem arise often.