Not picking a fight here, just adding my opinion. Sorry if you don’t like it.
I do work on Tv-series, Reality and Movies on a daily basis. So I think I can say that I have a bit of experience. That is including receiving crappy recordings.
Not going to answer line per line, just a few things.
-When I receive a recording (I call that a “take” which later is cut into “clips”) which is way under the targeted level, I just boost (DOP) the complete take x-dB (Key Command 6,9 or 12dB) so it sits ballpark in the target range. Then, and only then, I start dialog edit by cutting up the take in smaller clips.
-Location recordings always need extensive Dialog edit. So restauration and (clip) levelling is part of that process. You prepare the dialog “ballpark” for the Mixer. (Which can be you, yourself)
-LUFS is a measuring method over time. I.e. it is measured over the total program length. And it is measured over the total mix, not only on Dialog. So levelling dialog lines/takes/parts to “a” LUFS- target is nonsense. The LUFS target is for the complete mix. However, you do level dialog. You level it on a calibrated system by ear. I don’t think I ever looked at metering during Dialog edit.
(Except for Netflix, which has an individual loudness spec for dialog)
-In a one-man operation, the same procedure goes. 1: Dialog edit 2: Mix
Mixing involves gain riding and writing automation, while dialog edit mostly involves offline processes. Can you do both at the same time? Sure, but the order of execution remains the same.
-When I mention “dubbing”, I refer to foreign language dubbing. Recording within a studio environment. Especially International productions can have -very- weird workflows, which indeed need “exotic” procedures.
-It is not because I try to offer a solution, that I am deaf for the arguments in favor of an improvement of the functionality.
Fredo