I've always been fine playing Rafaela in CF as much as possible. I did not like seeing him at SS, last year, but he was the best we had there, for a while.
My point about playing him in RF vs LHPs, assuming we platoon Abreu, again, is that he's way better than Ref, Duran or Yoshida out there, and the drop off from Rahaela to Duran in CF is minimal.
I'm not sure any top prospects break camp with the big club and never have been. I see a few reasons for keeping them down, one being an added year of control. That being said, if and when Anthony joins the OF, a big question on who gets squeezed will occur. My guess is Abreu and Rafaela will platoon (Abreu in RF and Rafaela in CF with Anthony moving from RF to CF or LF, depending on who is sitting, and if we want Duran in CF over Anthony.)
Some choices will have to be made, at some point, unless the kids never get the call. That is very unlikely.