The best way to improve the flow of the game and crack down on intentional fouls is to take a page out of football’s (soccer) book. The concept of “advantage”.

Basically, if an offensive team is in a state that is considered as an advantageous position to score or make a good play, any defensive foul will only be called AFTER the play.

This would especially help stop these bad fouls during fastbreaks denying the player (and the viewer) from a fastbreak dunk or easy basket.