I'd be happy if they just added it as a series of weekly practices or training drills ( with enough changes to cover all positions ) and stuck it in before preseason game 1 , same idea with a couple of OTAs in the off season , but the idea appears to be in FOTF so an expansion of that , encompassing all the roster would be fine
I just want another means to progress players that isn't game stat related and the option to weight things to our personal taste