I think Shaw is the leverage the team has on Pablo and Hanley, the guy who could outplay them and win their jobs. And I think they're playing him at third to send a message to Pablo in particular that he's going to have to earn his place. If Pablo starts slow, I doubt they'll hesitate to throw Shaw into the fire at third base, and ditto for Hanley at first. Of the three, Shaw had the best hitting record last year and I want to see him playing any time it made sense.
I think there's a 0% chance that Shaw does not break camp with the team as it stands right now, he'd have to get hurt to not be on the 25 man, especially after his performance last year. I'm actually excited about the kid and want to see what he'll do with extended playing time. He has looked good.
There's a possibility in my mind that Shaw is our 3B this August, and Sam Travis is our 1B. if dire predictions about the toxicity of our two troubled veterans bear out, and the team is otherwise competitive and has a chance at the playoffs if they can put those guys behind them, I honestly believe they will move on from both.