now your speaking my language.
when I worked on "American Addict" (movie on Netflix, Hulu, ext)...I was busy working as a Chef (day job, 2011ish)...long hrs didn't have time for the project.
my buddy "Spydog200x" does great work in the whole mix..so I needed him to dump me "stereo stems" that "highlights" the wide field but give me "summed" or mono tracks of bass & Kicks, or anything along those lines.
woke up tracks ready from Dropbox, still had to work the next night....lined up in Protools, loaded up "field of dreams", 75% done....had to have him pan the guitars more from 2 dudes from "Suicidal Tendency's" & re-dump all the drums to at least -12dbf.....so I had room to play.
all the Hip Hop tracks on the movie were dumped/mixed on A Roland VS2480, arranged in Protools.
I used and worked at -12dbf, Stems, Sums & mono tracks in Logic Pro using my Reaktor Mastering ENS file.
so ya @William_WiLD totally...agree.