The NBA offseason has brought many changes to rosters, coaching staffs, and the list of championship contenders. As we draw closer to opening night, it's time to move our focus from the potential impact of each offseason event and onto the broader issues that figure to define this season. The BDL 25 takes stock of, uh, 25 key storylines to get you up to speed on where the most fascinating teams, players, and people stand on the brink of 2015-16. As with all things Kevin Garnett seems to do, this is just about unprecedented. [ Follow Dunks Don't Lie on Tumblr: The best slams from all of basketball ] Seemingly on his way to a sad ending to a brilliant career in Brooklyn last season, the notoriously averse to change Garnett signed off on a deal that sent him back to Minnesota to join the Timberwolves franchise he played for from 1995 through 2007. The Wolves had the worst record in the NBA at the time of the deal, they had given up their best healthy veteran at the time (whom they had dealt a first round draft pick for) in Thaddeus Young to re-acquire KG, and it was assumed that the team would trot Garnett out for 20 minutes a night to the delight of fans that can remember what life...