We certainly need more bigs. Still, I like Ainge and Doc's general philosophy: draft, sign, and play talent, not size. That's how Danny landed guys like BBD, Powe, Gomes, Allen, and Bradley. All were perceived to be too small for their respective positions and slipped further in the draft than they probably should've.
Same with Doc. Since the beginning of the Big Three Era, he hasn't hesitated to play small ball if it meant getting the best players on the floor.
So while I'd like more size, I certainly don't think we should be looking to draft size over talent in the upcoming draft. Similarly, I don't think we need to play Hollins or Williams just for the sake of having size. Mismatches work both ways.