In fact, its clear that Frank isn't ever going to have some sort of shooting specialist, so its unreasonable to expect it.
True, but he does screw with his lineup a lot, and if he feels like he's got a decided advantage by having a 'shooter' on the floor, or he needs to protect a lead with free throw shooting, he'll sub him in.
He's not going to draw up a picket fence play for him, probably, but if Tay is on the floor spelling Angel, and Rodney is out with foul trouble, someone's gotta put points on the board. If Will is hitting shots, it makes sense to have him in as long as you have someone like Shane in there as well to potentially handle the ball.