I firmly believe that you don't trade an everyday star for a pitcher. If I did it, it would have to be for the best most dominant young arm out there, i.e Verlander, and i would not be thrilled to do it.
BTW, I am not sure why you say "2 more years of Ellsbury." I realize that he will be a FA, but it's not like the guys on your list have perpetually renewing contracts. We will not have them indefinitely.