Fans won't like it, but waiting might be the best move. The 17' free agent crop looks like gold. So you'll have the same opportunity at adding a star in trade in Feb, or at the draft. Then pounce on one of these gentleman :
Stephen Curry, LeBron James, Blake Griffin, Russell Westbrook, Chris Paul, Kyle Lowry, Serge Ibaka, Paul Millsap, Gordon Hayward, Greg Monroe, Derrick Rose, Rudy Gay, Andrew Bogut, Jrue Holiday, Danilo Gallinari, Andre Iguodala, J.J. Redick, Taj Gibson and George Hill among many others. Durant could also be unrestricted if he opts to sign a one-year deal this summer.
So if no Durant, Horford, or Howard this summer, patience might be a virtue here.