Yeah, I agree with this. 200 PA is where I try to break up minor league seasons into thirds I guess.
Take Alcantara for example, he has a pattern of always struggling at a new level early. It's probably a combination of weather and adjustment but once he figures it out, we have also seen a pattern of sustained success and he really takes off.
AAA is the one level I like to see much longer sustained success. Michael Busch is the first name that comes to mind for that strategy. He got, what, some 1200 AAA AB's? I've always wondered how much that has played into his success with the Cubs. I think we really underestimate the value of AAA sometimes.