With me that's a possible big red flag with Bogaerts. Now he could have a monster year and quell some of those fears. But his power has declined, and his offense has been on a decline with his ISO dropping every year for the past 5 years. His offensive value was largely turned out by his ability to still draw walks and a BABIP .30 points higher than his career average last year.
A lot of his value last was also tied to his defense, which apparently was dramatically helped by the shift. He loses that advantage moving forward, and if he continues to lose a step he could soon be a corner infielder with fading power.
I would not be surprised if Bogaerts bounced back and had a great year, but he could just as easily be on the brink of a steep decline. Dont' get me wrong, Bogaerts offense is still elite for a short stop, but if he's not a short stop and/or that trend continues then thats a lot to think about for 11 years.