I have to admit that I have been really impressed with JJ's improvement through the year, and his play has been super impressive. I haven't watched Fultz or Ball play as much as I have Jackson, so maybe I am biased, but the trio of Smart / Brown / Jackson seems like a great trio for the future.
Great size & strength, great desire to win, lots of intangibles, athleticism off the charts. All 3 seem to be able to play multiple positions which in the event of us losing either AB or IT in the next few years due to whatever reason.
Jackson completely seems like a Danny Ainge / celtics type player. If he can keep improving like he has this year, I would say his ceiling has to be close to that of Fultz / Ball with better defense right now, and better size. He seems like he could play interchanging from 2, 3 or even 4 in small ball after a couple years of bulking up.