Division 1--THE NBA. You're working to gain that edge over the competition, have the best coaches, best training staff, best everything. The fans are delirious and mostly fair weather (cough cough Warriors, Lakers, etc). Dependent on your situation you're either on the rise looking to take the throne, you're a middling team trying to stay afloat and make money, or you're bowing out on a rebuilding phase.
Division 2--College Ball (NCAA). Some prominent teams get intense recognition as the people at the top are worried that they'll come into the league and start wreaking havoc. Other times these teams are very young, hungry, ready to compete. More traditional tactics and more traditional strategies. Some experimenting done here and there.
Division 3--Division 2 and Division 3 Hoops. You have the much smaller market teams that have a few diamonds in the rough who can make it up top to the pro level (Div 1). This is where the most experimenting happens here. Much development is happening here as well. You're devising a scheme to get up to the top, as many prominent coaches sometimes start here as well.
Division 4--High School. The new kids. The new people who are hot commodity. Word on the street is that these people are who have next in the bigger leagues. Sometimes once historical teams are put back on the map with the return of a son/relative to the a former Div 1 legend. This is where the building takes place and the hype builds up.
3 Time NBBA Champion. Certified Trainer. Mentor. Have any questions? Feel free to shoot me a BB-Mail!