I read an article a few days back that made an interesting point. While the Braves do have the prospects to trade to get whoever, with the international signing penalty they don't have ability to easily replace those prospects. I think AA has been wise by being conservative trading away prospects. To ensure long term success, this year more than any other Liberty Media should have had the foresight to try and address all the current needs of this years team in FA. So they could hang onto their "hard to replace/ irreplaceable prospects" while providing the support this years team as earned and deserves.
Personally I'd rather hang on to our top prospects than waste them on a middle of the rotation pitcher, a bullpen piece, or some average closer. That won't get this team to the WS anyways. Unless it's a real difference maker type player, don't risk the future. Just my opinion.