Trading Harden was an absolutely TERRIBLE move from every possible perspective. The only argument for trading him was financial - but they still could have kept him this season and dealt with it in the off-season.
That trade was an absolute steal by the Rockets, and a major blunder by Presti that potentially closed this team's window (depending on how Ibaka develops).
That said, Presti still gets enormous credit for building a team that won the West and went to the FInals last year. He needs to make up for the Harden blunder somehow, though.
Honestly, the biggest problem with OKC is Scott Brooks. He is just flat out not a good coach, and Westbrook's absence has really highlighted how one-dimensional his game planning and play-calling are.