I think the important numbers for Rondo this year will not be his individual stats, it will be W's.
For me, that is the biggest questionmark. We know he can put up crazy numbers. And I think a lot of us assume that will continue, even without KG and Pierce. What we don't know, is can he lift a team up, and be the best player on a winning team (OK, I know you could argue that he was the best player on the C's the last few years...but that is at best debatable. now it should be cut and dry).
I think if Rondo goes out and puts up crazy numbers, but the team still loses, he is going to still get torn apart. But, if the team wins next year (and by winning, I mean more than expectations. I would say if they are .500, it would be a major success), I think Rondo will get big time praise, even if his numbers are not impressive.
edit: but I should also be clear, there is nothing that will make me stop criticizing him, or anyone else. If I wasn't going to criticize players, I wouldn't be on this site. Criticisms lead to discussion.