Good point/challenge, jojo. After reviewing the state of desireable RH-bats that are not too old or too expensive/not available (like, say, A-Rod), I knock a wish list down to who I have not seen mentioned in previous threads:
Josh Willingham
Carlos Quentin
I have no idea if either Florida or the White Sox would entertain discussions for them, but, yaneverknow. Can't hurt to ask. They are both young(ish), good power, and RH.
Aside for those two, I have liked the previous calls on this board for inquiries into Reggie Willits (should be available, or, at least, more available than the others I have mentioned here) and Matt Kemp. Again, no idea if Kemp is gettable, but yaneverknow.
ETA: I just don't think Washington would part with Zimmerman under most scenarios at this point. The ones I have listed here, I don't think are in the Zimmerman untouchable category...