Reality check for the NFL here - the CFL remains for the NFL another fertile ground for a few players to crossover each season, with the gap in performance and training of many CFL players quite low or near zero as compared to the NFL standard, including also beyond merely play on special teams (for which the NFL draft serves as the feeder, especially in the 5th through 7th rounds, along with a few undrafted free agents).
But the NFL Godfather is not giving up its ambition to build a farm league, now known as the UFL 4.5.
I still don’t see the NFL making spring football controlled by proxies and media puppets a success on its own accord, but damnit, like the NBA with its G League, what the NFL wants, the NFL will have even if they have to lose some money.