Over at the Audio Mix Club site, Rob, the guy who runs it is an excellent mixer who really promotes this idea. He really pushes the idea of “template mixing” to facilitate exactly the kind of “headroom” you suggested above. He’s a bit of a Billy Decker disciple, and has spent some time with Billy personally.
Billy currently has a book out that I have, called “Template Mixing and Mastering” in which he breaks down is approach to “speed mixing”.
While I don’t personally have any ambitions to compete in the world of “The Big Boys” (at least, not in terms of seeking to earn an income and achieve status in that world), I think this concept has some merit, in the sense that, if you can speed up your workflow in getting to the creative part of mixing as quickly as possible, you stay fresh, and you don’t burn out - physically, emotionally and creatively.
Now, I’m not a fast mixer by any stretch of the imagination, but I’ve gotten faster over the years… so I thought I would adapt this template idea to my own way of working, and I built a template as a starting point for my mixes. I’ve come to the conclusion that it is a great idea, and it really does assist in getting to the magic static balance point, where all the processing is done, and you’re ready to start really mixing: ie: you’re ready to “do all the tiny tweaks that the big boys do”.
Actually the first mix ( for someone else) that I did starting out with a template like this was this mix that I did last month at AMC. It worked out pretty well, I thought.
That said, I don’t think so called “speed mixing” or “template mixing” is something I’d recommend to beginning mixers. Guys like Billy and Rob probably put 20 years in before they started doing it that way. I believe you really have to develop and explore your own taste, sense of balance, and just basic technical acuity before you can get to the point where you’re ready to turn it all into a “workflow”.
I see some who are 6 months into mixing spruiking these concepts, when it is clear from their mixes that they haven’t put enough time in and made enough mistakes to even get to the point where they know what a good static mix sounds like. That’s kind of like trying to run before you can even crawl IMO.