PG: Deron Williams
SG: Kobe
SF: Lebron
PF: Garnett
C: Howard
This is who I'd start, then I'd pickup a few other all-star types, like Chris Paul, Stoudemire, Marion, and maybe Carmelo (because he usually shows up for international games).
Then I'd fill the rest of the roster with ex-college players that play in EuroLeague and can shoot and are as good fundamentally as the best of the international players....Personally, I believe that U.S. basketball hasn't gotten worse, its just that our best fundamental players just don't make it to the NBA...they're overlooked by the mystique of an international player, and the athleticism and hype of other, less fundamental U.S. Players.
A guy like Kevin Pittsnogle (7 footer with unlimited range, but never made the NBA), or Nick Fazekas (another 7 footer that has great range, and has a very fundamental game...can put the ball on the floor, face up, post up, etc..).