Would you rather Lin?
I'd rather a 4.
Harden seems to be ball dominant... as in he is most effective when he has the ball in his hands.
I'm not sure how that would work with Rondo.
I mean, that's why Lin wasn't "Linsanity" this year. Lin is a ball dominant PG, and he had to defer to Harden. It forced him to play off the ball and spot up from 3. That isn't what he's good at. That's why he struggled at times.
So I'm not sure how it would work with Rondo.