PI calls should just be reviewable since there's way too much judgement having to be made in a split second. Yes, I know what most would think - "That would extend the length of the game to far out". I disagree, teams still are only allowed to use the finite amount of challenges they have available to them during the game (what is it - 2 per game now?), and at minimum 4 minutes of attempted fairness should be tolerated for such a largely judgmental and complex call.
Reason it's not 15 yard penalty right now is the defense would abuse it on long plays if they know they've been exposed.
Also, neither receivers nor pass defenders should get up and start whining for a flag after a play. Just call it unsportsmanlike conduct - because it is. Refs should refs, players should play.
Oh and only Brady should not be allowed to whine for a flag after a qb hit - lol.