I seriously doubt we trade Casas, either. My point was that even if we trade him, our 1B situation is better than CF, SP, RP, RF and 2B/SS.
Now, back to trading Casas, I'm not for handing him away for nothing. Thinking of trading someone does not equate to "giving up on him" or "undervaluing him." That's just a bias some poster seems to have while feigning objectivity.
IMO, we will likely not have a big enough budget to sign 8 more than capable FAs (CF, SP1 or 3, Closer, RF, 2B or SS, Set Up, SP 4 or 5 and RP or C), so we will have to trade a prospect or two to fill at least one slot. To get quality, you have to trade quality. We are not getting Lopez for Dalbec, Downs and Duran. And this loops back to my first point: what position is currently best suited to go with what we have, now?
One can argue Arroyo at 2B, despite his injury history.
One could argue RF with Refsnyder or Dugo (with Duran in LF)
or
One could argue 1B with Hosmer, Arroyo, Dalbec/Cordero in AAA (assuming we fill 2B, CF and RF.)
It's not a crazy concept to look at the big picture and at least consider all the options.