Drafting all the guards, drafting shooters like Young and Hunter, and also drafting a 6-8 center? It makes me think the Celtics are trying to build the ultimate offensive, fast pace team to counter the Warriors in the west.
Going after Tobias Harris makes complete sense, he and Crowder make very good PF's in a small ball system, similar to what the Warriors did with Draymond Green. Sullinger can be a low post threat at center when buckets are needed and Mickey could be an even more athletic version of him who could block a couple of shots. Maybe Olynyk fits in too, maybe not.
The offense in this starting lineup would be insane with Harris added:
Thomas Rozier
Bradley Smart
Hunter Young Turner?
Harris Crowder
Sullinger Mickey Olynyk?
Zeller and probably Turner could be on the way out. Interior defense is obviously lacking, but thats what you give up when you move more towards speed and offense. Perimeter defense, especially off the bench, would be unreal.