Minimal. The bigger upgrade will be VL and that will account for about 35% of his AB. But, then again, it opens up another roster spot so, if you fill that one well, it can be quite a bit more.
I don't know if there are any US cities clamoring for a baseball team. I suppose Puerto Rico could be an option. Or maybe Mexico.
Not real sure that Miami really has a baseball market but I'm assuming he has pics of Selig with a donkey, eeyore.