Rondo and Doc both should share the bulk of the blame for the team not performing the way it should, then Pierce to a certain extent.
Rondo's pace is horrible. Game after game you'd see Rondo going to the bench, and suddenly we start playing faster, you put Rondo back in, with the same unit, and everything slowed down.
Also, Rondo pretty much had complete autonomy on play calling.
So I don't see how one can see a problem in our offensive system, and not throw some of the blame towards Rondo in this circumstances.