I have a slightly different view. I agree that when the length approaches a car coat, as happens with some model labels, I don't like it.Agreed. I've seen one too many really nice, classic leather designs absolutely ruined when someone thought it was a good idea to lengthen them to work with the cut of modern trousers on which the "waistband" is four to six inches below the natural waist. Throws the proportions all off. My view, if you want a jacket that hits that length, buy a different design that was created to be that length from the off.
My PHWM and custom J-100 are all longer including the front drop and at least I don't find it inappropriate.