Well, if the question was Pierce & McHale, as the cornerstone of a Pitino era dynasty, then the answer is 'Yes'.
The reason for that is that starting in 2000, the Celts would in effect, have the type of game which Walker couldn't provide to Pierce and that was an interior game PF/C, mixed with a wingman extraordinaire, who could take it inside or outside, whenever he wanted.
And thus, once you have that combination, the next piece is to fill in with role players like a back big man banger type like Potapenko (see cheaper Perkins), backup small forward shooters like a Rodney Rogers or a Devan George, guards like Strickland or Payton. And hopefully, one defensive specialist, like a James Posey/Bruce Bowen type, will fall in our laps, from the free agency, and then, we have a shot at a title.