It almost feels too perfect. The scrawny, 7-foot, 195-pound sopping wet Chet Holmgren from Gonzaga playing for the Oklahoma City Thunder. It’s easy to imagine him sharing the court with Josh Giddey and Aleksej Pokusevski. Three caucasian dudes, all above 6-foot-8, and all with diverse skill sets and all skinnier than a bean pole. But what about on the court? Thunder exec Sam Presti is known for mixing it up when building out a roster. He’s gone full tilt since the breakup of the underachieving Kevin Durant/Russell Westbrook/James Harden/Serge Ibaka group. He’s become a madman in his experimentation with positionless basketball. All three members of the current Thunder core: Shai Gilgeous-Alexander, Lu Dort, and Giddey, can’t be pigeonholed into a specific position. Each can …