a few years back I would be completely against it. the whole 'cb falls behind and only gets 15 yard shyt' was reasonable.
now, why the fukk not ? qbs air it out deep every time on 3rd and nowhere to go hoping for bs PI calls.
fukk NFL offenses, defenses are in position of being bums all the time. this will at least be a rule that benefits defenses a bit
besides, its not like CBs dont do the 'fall behind and grab' shyt and only get 5 yards+auto first down, when they know they're beat off a break double move or something