NBA players back in the 60's and 70's weren't generally athletic, in the quick-as-lightning, jump-through-the-ceiling sense. There were a few on past Celtics teams, but we have them in abundance in this 2018-19 crew.
Dee Brown, Greg Minor, Dominique Wilkins, Xavier McDaniel, and Acie Earl is probably the reigning "most athletic possible Celtics lineup from history" and that's kind of sad.
Hard to argue with the present group of Terry Rozier, Jaylen Brown, Jayson Tatum, Semi Ojeleye and Rob Williams - and when is that Timelord moniker going to go away?