I wonder if part of this is recruiting. More weapons make it tougher for the defense. Plus repetition in practice. Knowing how to get open, knowing the plays. I expect Geo to be better next year. Issa too. How much better? I don't know, but experience will help.
There is no doubt that the talent around you factors in. 7-footer Isaac Haas down low certainly helps the Purdue guards get great looks from three. Conversely, the loss of an outside shooting game this year has hurt Wisconsin's Ethan Happ, who is constantly double teamed with no one to kick it out to.