If every team in the NFL had a "B" team (like european soccer teams do) where players are signed right out of HS (or drafted - whatever)...and the NFLs "B" league played on saturdays, wouldnt everyone watch?? I know i would.
Ratings would have to be high i imagine. Bc you have a vested interest in seeing players on your B team develop bc they will eventually be in the NFL in 2-3 yrs or even one year depending on how good they are. NFL would make money off of tv contracts to air those games and that would cover cost of "B" team.
Pay players 50-60k a year. Youre still watching top talent bc these players are the same players that wouldve been playing on alabama, nd, usc, arkansas etc. instead now theyre in the B league.