I think my biggest problem with the idea that the perimeter rating determines how likely it is that a player takes a three point shot is that the alternatives don't seem to be much better.
Going back to my player,
James Orr. He's got a 37 perimeter rating. But his low post rating is 14. I honestly don't have a clue as to how the sim is determining what a good low post rating is for guards but I'm going to assume that 14 makes him just as bad on the inside as 37 does on the outside.
On my team, I have Orr set to the (tied for) second highest distribution on the team and there is a big difference between second and fourth. Orr is currently taking 16.3% of my team's shots in 24 minutes a game. He's definitely involved in the offense.
Every team I go up against runs a heavy (-) defense against me.
Because the new engine is enforcing distribution pretty tight, Orr is going to continue to get his shots. I'm being a bit simplistic here, but he can take one of four shots.
1. A three pointer that is likely to be an open look.
2. A long two pointer that is a bit less likely to be open but still should be pretty open.
3. A midrange jumper that should be highly contested given the fact that the defense is packing the paint with defenders.
4. A shot in the paint that is highly contested.
Shot #4 is not only highly contested but Orr's 14 low post rating isn't going to help at all.
Shot #3 is probably Orr's best shot normally but given the defense isn't going to be a good look.
Shot #2 in real life is about the worst shot you can take. Long two's are just about as tough to make as threes -- and for many players more difficult since they practice more threes.
Shot #1 stretches his range but it is an open look and given the extra point is almost for sure better than taking a long two.
I very reluctantly accept that the sim is going to say that the three point shot is not in his skill set. But even if that is true, if the new distribution is going to ensure he's highly involved in the offense, which shot is he supposed to take? The midrange jumper might be the best option normally but is it really when he has to shoot over two others to take it?