The most interesting aspect of a Move Controlled baseball game to me would be the pitching.
Here's some points for pitching-
-They should have it implemented like Frisbee Golf, when you release the trigger it lets go of the ball.
-Pitching Speed should be proportional, meaning if you throw harder it goes faster, slower goes slower.
-Controlling accuracy should be read by where the Move is when the trigger is released. Example- If you release the trigger when the Move controller is high, it should go high.
-Curve, Sinkers etc should be controlled by how you twist your wrist when you throw the ball. For instance if you side twist your wrist right, it will throw a slider.
That would be totally natural then, it would feel like you were actually controlling and throwing a baseball. I could see playing that game for a long time like that! Imagine online play!
That is the kind of Move implementation that people look for, excellent integration. More Natural Moving, less button presses.
What do you want from the controls?