Separating Lindgren and Trouba from the best two D-men on the team has done wonders for the latter - Miller and Fox have been phenomenal analytically, and their play-styles complement each other beautifully. Miller can carry the puck through the neutral zone very well, and his skating ability allows Fox to cheat toward the slot offensively.
Miller has had some visible gaffes this season, but that is to be expected from a puck-carrying skater logging 1D minutes. The many good plays he makes on a game-by-game basis have so far outweighed his mistakes handsomely, and his ability to carry the puck deep has been instrumental in developing the PP2 into more than a novelty unit.
Hopefully Miller can continue to build on this early success - he’s been one of the more underrated players on the roster this season.