Indeed good coaches know how to acclimate their styles to the player movement.
Pat Riley coached the Showtime Lakers to great success using a fast-paced system that involved having a great distributor in Magic, but when he came to the Knicks he was able to implement tough, defensive basketball to great success (if not for that ****er Michael Jordan) because he didn't have the same roster that he did over in LA.
Mike D hasn't done that...but at the same time, it's not like any of our players would be elite defenders in a half-court system either. We have players that are suited to his style, and I think D'Antoni will eventually be able to work AR and Mozgov into his rotation - you have to remember that they're both young and incredibly raw, especially Mozgov, so there will be difficulty in getting them minutes at first, especially with other players they've never played with before.
But D'Antoni eventually relented and gave Nate some minutes, now especially with Gallo hurt you'd think he'll be giving AR some time too especially due to his length and athleticism