I wonder if this is how the units will end up looking:
PG: Parker/Mills/Murray
SG: Green/Ginobili/Simmons
SF: Leonard/Anderson/Garino
PF: Aldridge/Lee/Bertans
C: Dedmon/Gasol/LJC
(Adjustments to a potential other 15th man would shift guys around)
That seems one of the most likely ones on paper, and you'd have essentially the same roles for both units
Ball-handler (Parker, Manu)
Shooting guard (Green, Mills)
Iso wing (Leonard, Anderson)
Iso big (LMA, Gasol)
Finishing/rebounding big (Dedmon, Lee)
This would balance out the scoring loads of the top-four offensive players on the team, while also easing the offensive burden of the guards. The defense is imbalanced as , though. Anderson and Gasol would really have to step up, or else one of Garino or LJC would have to make the team/rotation and make an impact. Or the team would have to trade Mills for a guard who can defend. If two of more of those things happen, the Spurs could be a deadly, deadly team.