To be honest, I didn't think that was unknown. I'm sure Anderson and ADI talked quite freely about that during AvP's production and on the features?
I know Paul wanted broad, gladiator like Predators but I never heard Paul wanting the Predators to look like "American football players". Unless I missed it in some supplemental, that particular liken / association was new to my ears, in a quite unpleasant way.
I finished listening to the Podcast. I'll have to listen to it again, but regarding the Emissary / Caravan version of "The Predator", it almost sounded in mid conversation that Alec was about to endorse Fox's decision to order cuts/changes, but diverted to a more neutral approach.
And hearing that there were scenes filmed with Nebraska offering an Emissary Predator a cigarette, and some of the takes the Yautja actually puffed away and smoked it, yeah... I think that leads me to say..... thank you Fox!