It all hinges on competing next year. You assume the Braves can't be good next year, but many disagree. They have the resources to address 3B, LF and C this offseason, while Swanson and Albies can take over SS and 2B. Revamping 60% of the starting lineup has a way of making a team markedly better.
Folks need to get it out of their heads that this team is somehow going to go from 90 losses to WC contention in one offseason if they just time everything exactly right. With some competent moves to fix 3B, LF and C, this team can win 80 games next year. Then with a few more moves after 2017 they can be an 85+ win team. At some point they have to start getting better, and that won't happen next year by trading Teheran.
People assume that Swanson and Albies are going to come up and immediately fix our middle infield - many prospect, even elite ones take some time to adjust to the majors -- and some never do.
Considering both are in AA right now and that Albies struggled some in AAA and Dansby had a poor month in AA; they probably aren't difference makers next year. Love both of them, but we shouldn't be counting on a 20 year-old Ozzie Albies to come up and hit .300 for us.
Then you still need to find answers at C, 3B, OF without sabotaging the long-term outlook in a weak FA market, and you still need to see improvement from Wisler/Folty/Blair/Gant types --- bottom line the overhaul this off-season would have to be massive to actually be a competing team next year.
Its not impossible, but it seems pie in the sky to think this team gets that much better when most of our building blocks are in AA or below.