The issue is that the NBA variation of this rule has never affected baseline drives. Their reason is that being under the basket, even directly under it, is a legitamate defensive position for defending the reverse layup. It takes away the offense's path to the point where they'd prefer to take the shot where it doesn't do so for drives from points not along the baseline (it is a spot after the release of the shot).

The reason the NCAA did not adopt the exact NBA rule is that there is a 2-3 year notice they need to give schools to make the proper markings on their court. If the committee is happy with the new rule, I wouldn't be surprised to see the markings in the necessary 2-3 year timeframe.

The region is much smaller in NCAA (literally the area under the cylinder), so that could have been a factor as well.

This new rule defeats the initiative 2 years ago where a POE was to call charges anywhere on the court especially under the hoop. Funny how things change so quickly.

Wowzers
 

In establishing position in any outnumbering fast break situation, a player may not establish initial legal guarding position under the basket since there is no primary defender. <O:p

This may be the single stupidest statement in the history of basketball. If it's a three on two break, you can't have LGP under the basket? A fast-breaking guard can now drop her shoulder, bang into a big who has established position underneath and get two from the line? How can you have a rule that creates the concept of legal guarding position and then say "wait, it doesn't count based on where the players involved in the contact were several steps before contact, because the principle of advantage/disadvantage doesn't apply in our Special Unmarked Area Of Magical Powers?"

But then, I thought (and still think) the three-point shot is as bad an idea as the designated hitter for the pitcher

No, that can't happen.

This is a NCAAM change only.

Well played, sir.