I'd prefer to see Tim follow in Dick's footsteps by creating his own unique identity and breaking out of the shadows of his mentors. "Red Robin" is just too derivative -- it was reasonable as a way to show both a progression and a return to roots of the character in Kingdom Come, but it just seems weird to have both Robin and Red Robin running around.
"Oh, I see... you're not Robin, you're *Red* Robin. Er, you know the other Robin still dresses in red too, right?"
Well I don't really see the issue given that we're fixing to have several Batmen anyways.