I think it is a lot to assume that Kevin Love, Kevin Durant, and LaMarcus Aldridge will all be out from now through the end of the Finals.
I guess it would have been interesting to acquire George or Butler, but we would have given up a lot of rotation pieces (and picks!) to get them. If Bradley, Brown, and Crowder were gone, would we really be any better? Would George or Butler integrate fast enough so that we could beat the other top teams? What about GSW's backcourt without AB to guard them?
I suppose it's possible that none of these players return this season, but I hardly believe we would have been favorites even with such an outcome.
As jpotter mentioned, Ibaka would have been a nice addition to our team without having to gut our roster and future salary commitments. Oh, well - still a lot to look forward to.