Let's face it — the best and most powerful teams in the NBA don't really change from week to week. A handful of results in the middle of winter can only mean so much to a franchise's championship hopes. What does shift regularly, though, is how much interest a squad can hold over the course of a season. Every Monday, BDL's Most Interesting Power Rankings track the teams most worthy of your attention. THE TOP 15 1. Cleveland Cavaliers (30-12; last week : 2): On one hand, it seems insane to fire head coach David Blatt after a season and a half of leading the East's top team, and before an all-but-ordained return to the Finals to find out how a (hopefully) healthy Cavs roster would fare against a Western wonder. On the other, it seems reasonable to fire Blatt after losses to the San Antonio Spurs and Golden State Warriors offered, if not cause for panic , then evidence of what many had suspected: that this iteration of the Cavs, though capable of pummeling the East, can't trade haymakers with left-coast heavyweights. Detroit Pistons head coach Stan Van Gundy — one of several respected sideline stalkers to decry Cleveland's decision — described Blatt's ouster as one...