Steve Nash was drafted 15th, John Stockton 16th, Tony Parker 28th and the next coming of... Jose Calderon was not drafted, while Jason Kidd(2nd), Chauncey Billups(3rd), Baron Davis(3rd), Mike Bibby(2nd), Deron Williams(3rd), Chris Paul(4th) were all high draft picks.
Now if they were all available in the same draft I'd pick John Stockton 1st, Steve Nash 2nd, Jason Kidd 3rd, Chris Paul 4th, Tony Parker 5th, Jose Calderon 6th, Baron Davis 7th, Deron Williams 8th, Chauncey Billups 9th and Mike Bibby last. So, a good PG can be found later in the draft and a good enough one can even be found off the street (Calderon, Beno).
But, I think you're right about AJ, why not keep him if we can. He has a career 3:1.1 TO/Assist ratio, which is close enough to the 3:1 expectation of a good PG. And so far seems to have no problem with the backup role here and can mesh well with the team as seen last game. I hope we can keep him and address our more pressing need for a rebounder/interior defender to pair with Hawes scoring ability in the frontcourt. If we draft Hasheem Thabeet I'll be a happy camper. All the players that drive at will against us say Hello to Twin Towers II.