12. Miami Heat (2012/13)
The Heat were one of the least-loved super teams in NBA history. However, there’s no denying that they were ruthlessly efficient on the court. They put together one of the longest winning streaks in NBA history. Miami won 27 games in a row as they took the Finals by storm (via Bleacher Report). The dream combination of LeBron James, Chris Bosh, and Dwayne Wade were too much for their opponents.
In the end, the team wasn’t sustainable. James departed after winning his second ring with Miami. However, Bosh remained for another couple of years before his retirement. Miami built this team to win immediately but it came at a cost. They were irrelevant for the remainder of the decade. Each time franchises invest millions in stars and trade draft picks they take a massive risk.