Inciarte is a very good defender at all three OF positions. He is basically Heyward defensively without bringing as much pop in his bat, while having the ability to hit .300 and steal some bases. There is a lot of value in that and great defense can help a lot in winning a WS (KC has showed that in making two straight and winning the last World Series). So unless a team really overpays a la the Miller trade (unlikely since Arizona is not involved and since the most likely team interested is the Cubs), then I wouldn't deal him at all. He isn't making much for a while and isn't a free agent for 5 years. I'd keep him--which probably means he's gone and gone to the Cubs for a package I like less.
BTW, I haven't posted here at all since the Simmons trade, but I still occasionally read this board and obviously still thank some posts too. I hated the Simmons trade and what Coppy said about it and Simmons, etc. That said, no one can argue that the Braves got a lot in the Miller trade. I was among those against trading Miller and really like him but Arizona just flat out overpaid for him so no one can argue with it. Plus after the other trades before hand it makes sense to trade anyone if another team overpays for them.
Lastly, Markakis should be the one traded next but he probably won't be IMO.
PS: I was right about Bethancourt being as good as gone...