Personally, im pretty confident JMK will improve out of sight this year. With some quality coaching and some very well structured attack, every player will improve, but especially i think JMK will.
In the past he has shown he is quick out of DH, has a kicking game, and is a solid defender. The one area he struggled a little with was decision making. This was mostly due to poor coaching, and the forwards constantly demanding the ball. However, with Barrett providing the structure, and drilling it into them, JMK will know exactly where to get the ball, and when to get it there. His decisons will basically be made for him.
Im tipping he will prove a lot of doubters wrong.