What might ought to be remembered is the Dansby Swanson Rule (let's call it that), which in 2015 was created to allow MLB teams to trade that year's draft picks beginning the day after the World Series ends. Before 2015, teams had to wait a year to deal anyone from that June's draft. In the grand scheme of things, that means that just because the Braves don't draft someone doesn't mean they don't have a way of getting them later.
If the Braves wait until the end of the season to, say, trade Teheran, they could easily find some of this year's draft gems available in a package.
I'm not saying that's the way i would go -- I think his trade value will be its highest at the trade deadline -- but the upcoming offseason is going to be nuts.