I did not see the game against the Wizards, but the box score said enough about Gallo's play. But i am not sure that D'Antoni's system is geared to Gallo's imperfect talents. He can shoot. His current play in that regard is probably temporary. But let's face it -- he's slow and does not have a good handle in traffic. Instead of spotting up all the time, he should be in constant motion and looking for picks. Bill Bradley was slow, but he kept moving.
When Gallo spots up, the defender gets right into his face. When he spots up in the corner, he cannot even free himself by moving backward. Because the defender is in his face, it is almost impossible for him -- with his lack of quickness -- to put the ball on the floor. So either he takes a shot with a defender on top of him or he stands there waving the ball back and forth over his head until he can pass to someone else.
Gallo needs to move without the ball rather than spotting up and waiting for the ball. When he gets the ball, it would be helpful if he were in open space. Although he is not quick, he can be deceptive. I believe he is most effective when he is at the top of the key or at least not in the corners. Perhaps we would be better off with Wilson at the small forward position and Gallo as the shooting guard. But given Gallo's lack of quickness, this suggestion will bring howls from many of my fellow posters.
In any event, although D'Antoni's system requires shooters -- and I do count Gallo as a shooter -- the system is limiting Gallo.