For me Brian, speaking as a dubbing mixer in post studio, I would NOT thank you for a mix, good or bad. I want everything multitracked and separate, sounding great, at the right level, with enough trained And competent personnel to make sure I get it. Nothing less will do.
I agree there should be a live mix too but that’s a scratch track for the edit only.
Just because some people try and fail to get it right doesn’t change the optimum route for me.
Peter
Post Production Dubbing Mixer