Photo: Bo Butler-BostonGlobe This year's free agency period has been one for the books—teams are changing the entire direction of their franchise in one fell swoop. As we know, one smart signing can fix a glaring weakness. One bold trade can turn a playoff hopeful into a legitimate threat. And one perfect offseason can convince the rest of the league that last season’s version of your team was a fluke. So far, these eight teams have absolutely nailed it. Whether it was adding

Photo: Luka Hales-Getty This is it for LeBron James. After 23 unprecedented seasons, countless records and more mileage than any superstar in NBA history has ever endured, the four-time champion has reached what is almost certainly the FINAL stop of his legendary career. James will turn 42 in December, meaning time is of the essence—no more long term situations, rebuilding teams, or a sentimental reunion that can't realistically compete. His next decision will be made with on