The key player growth is with the young pitching (and I'm not talking about the long shot back end guys like Gant, Whelan, Ellis) and it hasn't developed as fast as it needed to lead me to believe that 2017 is going to be significantly better from a SP standpoint than it has been in 2016. Do I think the Braves will bring in a veteran arm or two? Almost certainly. Do I believe that those guys will be real difference makers? NO.
The Braves trading for Sale, Fernandez, etc. is just pure fantasy. The Braves aren't going to spend several years collecting young talent just to trade away the best of the bunch to bring in pitching on a long shot chance of being competitive.
I think you CAN win trades when you find the right partner who needs immediate ML help because they think they will contend and are willing to mortgage their future for the now - see Arizona last year or the Braves when they acquired Tex or Drew. It's harder to find a team with a quality star who's willing to give that star up for players where it doesn't dictate the return (one possible exception may be Oakland trading Donaldson, but from what I've heard it was Beane acting in a fit of rage).
I don't see how anyone can look at this team and say 2017 is a contending year for the Braves without going through gyrations of getting Sale or Archer or signing Cespedes, etc., except by viewing 2017 through rose colored fan glasses.