One thing the NBA unequivocally does better than college basketball is limit the number of judgment calls on charge/block fouls.

The NBA did that by adding an arc under the basket. If you attempt to take a charge in the restricted area designated by the arc, it's a defensive foul. Simple.

An ancillary effect of the arc is defenders attempt to take fewer charges, which leads to less contact — and fewer instances an official can influence the outcome of a game.