One big reason that the Euros don't send their best here anymore is the 20 hour rule that the NCAA imposed on athletes practicing under the coaches.
When your are a young and developing talent, who wants to have their kid come to USA to only practice 20 hrs on the profession that will make them millions. Yeah, they can practice and shoot on their own, but after the 1992 Olympics, most of the European countries started to build and fund basketball academies where their best talent can stay home and work out 6-8 hrs per day all year long to improve their skills. They attend about 2 hours of academic class a day.
We started this trend in the 70's with the now famous Nick Bolataeri (sp ?) tennis centers in Fla. Any young kid with talent goes there and trains with pro coaches to improve their skills. No major tennis person goes to USA colleges anymore to play tennis. It's filled with foreigners who played in that system growing up and now use us for a college degree. Same with the Bella Karoli gymnastic centers. Patterned after his Romanian training camps. He would laugh at our NCAA 20 hour rule if your looking at gold medals.
I don't see why we don't scrap our system of having kids go to college for one year only to go pro. Why not let them go directly to D-League to improve like we have the minor league for baseball. Then when they are ready, bring them up to the NBA. Invite all D leaguers and NBA'er to training camp together who are under contract.