Atlanta Braves organization prospect discussion

I am now working on the Minnesota Twins prospect list for 2016. The next teams in line are the Atlanta Braves, Kansas City Royals, New York Mets, Cleveland Indians, and the Milwaukee Brewers.

Use this thread to discuss the Atlanta Braves organization. Possible topics for consideration include, but are not limited to:

***The Braves are in rebuilding mode, working to improve the farm system while the major league team is currently struggling . How do you feel about the rebuilding process so far?

***Rookies who saw major league action in 2015 include second baseman Jace Peterson and right-handers Mike Foltynewicz, Matt Wisler, Williams Perez, and Arodys Vizcaino (not a technical rookie but might as well have been). Will these guys be key components of the next post-season Braves team?

***What is your take on Hector Olivera? How exactly do you slot a 30-year-old Cuban on a prospect list, not just the Braves list (he would obviously be at the top) but the broader list of MLB prospects?

***As always, feel free to share/discuss your sleepers and the system in general.