3) 33% is still pretty bad
33% shooting from three isn't "pretty bad." Since it generates around the same point per shot as a player hitting 50% of his two point shots, I'd say shooting 33% from three is "acceptable," especially for a previously non-shooter like Rondo.
Small sample size so far, but Rondo's improvement on non-layup shooting tins year has been remarkable. If he could only get better at the 15 footer when everyone else is standing around and the ref hands him the ball.