Aaron Harang would be a quality #4 starter, but I don't know if there would be any room for him in this rotation since Leake has stepped up this year. (Maybe there would be room because of Cueto's injury problems, and Cingrani could then stay in the bullpen or at Louisville.)
In the bullpen, David Weathers would probably make it. Eddie Guardado too, if he could stay healthy (which wouldn't happen).
That's it. IMO those are the only four pitchers from 2006 with enough talent to contribute on this year's club.