Some think that Wlad actually has as much offensive upside as Jones does, if not more. He's obviously not in Jones' ballpark in terms of the complete package, but he swings a good bat and he's progressed markedly from being a all-or-nothing, non-40 man prospect to being a more all-around hitter.
I doubt he has a chance to win a starting spot outright, but if he rakes in AAA he'll definitely be up for his offense because I don't think you can expect much from Ibanez (age) or Wilkerson (track record).
As far as the rotation, I think Felix stays as the ace...or at least goes on opening day. The last three spots are in flux IMO.