People keep forgetting that JJ was hurt last summer and fall, which kept him from playing for months - first his back, then his foot. Once he was cleared to play, Coach Hill had already established a rotation, and the Magic started off the season hot. JJ finally got his chances when the Magic cooled off and some injuries forced Coach Hill to look for a fix. Once he got a chance, JJ was just fine.
As for this year, it remains to be seen. Grant Hill leaving the team opens up the starting 2 guard spot. Bogans is still there, and to some extent Dooling and Turkoglu could play the 2, but certainly, opportunity is knocking for Mr. Redick. If the Magic hadn't gotten Lewis, then I'd have said JJ was likely to start, as they sorely needed a good shooter out there. With Lewis, Coach Van Gundy could decide he'd rather have Bogans in for defense at the 2, and let Turkoglu and Lewis shoot the ball.
Regardless, I expect JJ to be either the starter, or one of the first guards off the bench - i.e., an active part of the rotation. And no one is going to out work him. Let's just hope he remains healthy.