I think this would be another great idea if the producers & artists involved agreed to it. After all, that's what top mix engineers do - receive raw projects from a wide variety of sources.
As a second idea, think of the possibility to have a Feedback Friday Special where Warren discusses the mixes with the guest producer.
Great opportunity to announce in the youtube channel interview that a date 6-8 weeks from now there will be an Academy only FFS with the current guest.