In no particular order:
Rondo
Paul
Westbrook
Rose
Howard
Harden
Anthony
Parker
Noah
M. Gasol
Horford
Curry
Irving
Griffin
Love
A. Davis
George
Aldridge
Josh Smith
Brook Lopez
That's my list of the top twenty guys after Durant and James. Every name on that list has some issues that would make you give pause about thinking about making them your "franchise superstar." They are either still very young and unproven, or they've been around long enough that the cracks are showing and reality has set in about what their respective limitations are, or some combination of those two things.
This is why I always find it so short sighted when folks say "we have to get rid of Rondo for the opportunity to get a guy who can be a transcendent, franchise superstar." Well, there's your list. It's a good list of some very impressive basketball players, but Larry Bird, Michael Jordan, Magic Johnson, or Hakeem Olajuwan aren't popping out at me from among those names.
The good news, though, from my perspective, is that we have a guy on that list. Is Rondo a flawed player? Sure, but everyone on that list is. I'm not anxious to get rid of our top twenty, flawed player just to replace him with somebody else whose game we can instead put under the microscope and pick apart until half the fan base is convinced he's a no good bum.
Personally, I'd rather keep the "no good bum" that we already have and see what he can do leading this team forward with lots of help from management. For me, that beats spending the next 5 plus years waiting for the next Lebron James or Larry Bird to walk through that door.
And, if by some magnificent, slight of hand Danny Ainge finds a way to bring that player to the Boston Celtics, I'd rather have Rajon Rondo here to help him when he arrives.