On the first, I agree. But that's why you throw in Masa, or Hicks, or the Mets throw in Vientos or something else.
On the second, I could trade Abreu, but prefer to trade Duran. Duran was fine in CF, kind of like Ellsbury. But I find him painful to watch in LF. That said, watching him run the bases is truly joyful. Line drives straight at the CF, and then watching the CF have to hustle to keep him to a single is remarkable.
But one should really go.