Drumond would bring us a Final Four and possible championship.
Between Anderson and Gathers, I say Anderson. I'd rather grab Jamari now for the four and hix extra year of experience/lifting will mitigate most of the difference in talent between him and Gathers. Kyle fits this system so well. He's a winner and he can get a rebound and push it as well as a point....you almost never see that. Defensively, he will be able to defend multiple positions well in the zone. He might not be a great defender man-to-man ,but he can keep bigs and guards honest in a zone.
With Kyle playing the four, we could potentialy have a lineup of four guys that can run the point: Nuri/Jevon, Harrison, Harkless (albeit less than the others), and Anderson. That's a get it and go offense.