Yeah you are right, they are a holding pen, but AA, and A aren't much better. They don't have more coahces, if anything they have less. Each team has roaming instructors but having to visit 3 to 5 levels of teams a year, means that instruction is a minimum. Then NBA is not about to have a system where they have to pay instructors, and players plus what ever other overhead involved without generating at least some revenue to offset the expense and the more games they play, the less intstruction. Again, why set up a sustem that already exists and is FREE.