Nik really doesn't have a post game... at all. He tried posting up Yogi and failed. I think really the only way to get him looks is by other players hitting shots. Having McGary back would be huge because team would have to respect the pick and roll a lot more than when Morgan and Horford run it.
If LeVert, Walton, Irvin, and/or (brace yourself) GRIII can make teams pay for overplaying Stauskas, then it can help get Nik more looks.