If OKC had extended Harden,

giving 3 max contracts to 3 wing players would have been a bad decision.  I like that OKC ended up securing Ibaka with a long-term extension. They just need to develop him into a star or sign a good center to replace Perk. 

Russ would most likely never have improved if Harden had stayed, unless they had traded Russ instead of Harden.