Miller was good for the Sixers last year because he was steady and didn't make a lot of mistakes. This year, he's playing without a brain. He never was quick and never made the first pass to a cutter. He's not the type of point guard that sees the floor and puts the ball where a player will be by the time the ball gets there, and he isn't the type that's going to fool anyone into thinking the ball is going anywhere else.
This team needs a ball handler that knows how to set his players up for easy shots. It would probably help if the Sixers had standardized sets that they would run multiple plays off of. That way Miller could run down a checklist and try to take advantage of the best matchups.
The team made a living off of outworking other teams, and it still has to do that, because they are currently an inferior offensive team. Until Brand is quick making a pass out of double teams, and until the team figures out who's open because his man is cheating, the team is going to struggle in the half-court. This is pretty basic basketball, but for some reason this team doesn't know how to play it.