People complain a lot about Rondo's consistency, but as long as he can facilitate the offense and keep finding people who are ready to score, the fact that his scoring or rebounding comes and goes doesn't really matter.
Rondo is an elite facilitator -- perhaps the best in the league. If he's filling that role consistently, and the team is doing well as a result, there's no room for complaint in my mind.
I still think Rondo has it in him to break Stockton's single season assist per game record, though it may not come until after the team has been restocked with some young talent that can run the floor with him.