(This entry is the second in a series of 30 guest columns that will run during October, when optimism reigns supreme across the NBA. The theme will be “Five Reasons to Feel Positive About … ” We encourage you to follow the authors on Twitter and visit their sites. – CS) There’s absolutely nothing in the NBA worse than mediocrity. It’s a top-heavy league where if you’re not in the top five, the bottom five, or you don’t have a superstar,