Put mics and cameras on everyone and everything and broadcast it online or the NFL Network with an "R" rating or whatever the tv equivalents are for language and violence. I would love to see that.
Start with the refs, mic them up on a live feed and kill their feed only when the Head Chef is making the official rulling. That way the N-bomb is well recorded... lol, it's the only way to call that penalty. They can handle that. Mics on the first down marker and on the line of scrim (both sides of the chains on both sides of the field), That's where a lot of action happens. Goal line, the 20, mid field, goal posts, and a few players on both sides of the ball as well. If they still want to have broad casters bringing up stats and historical facts they can rock a ticker some where.
This is the only way couch watching can improve, I don't need hi def to figure out who has the ball. It would be like your at the game, and the sound would carry like you are at training camp.
Big money. Fans would watch the R rated version all day, and pay for it.