It would become the NBA. I've been a San Antonio Spurs fan my whole life, and until a few years ago in high school, I didn't even know the NBA had divisions, because all I would hear about were the Eastern and Western Conferences. Now, I couldn't tell you off the top of my head who is in the Spurs' division in the NBA (I will assume that the Rocket, Mavericks, and Thunder are), but I do know who is in the Western Conference and in the Eastern Conference. Some people are just upset that the Seahawks made the playoffs at 7-9, I'm pretty sure its never happened before, and it may never happen again, who knows. There is no perfect system, but I would say the NFL and MLB are much closer to perfect that the NBA, where every year at least one team under .500 makes the playoffs.