Just clarifying the actual terms of the deal because I was confused, and it is confusing. As best I can tell:
-Sac owes CHI their first round pick, top 10 protected, in 2016. If it does not convey, ie is in the top 10, then the Sixers can swap. If it does convey, then ditto for 2017. So the pick-swaps are essentially unprotected, as the Sixers won't be outside the top ten anyway.
-The "2018" pick is 2 years after Sac's obligation to CHI expires. I'm not sure exactly the terms of the latter; sounds like this is actually a 2019 pick assuming that Sac is bottom-10 next year. This pick is top-10 protected, so it might not actually convey until like 2020 (not sure if it continues to be protected, converts into 2nd rounders, or what).
-Sixers are sending rights a couple of overseas players they drafted in the 2nd round.
This is an extremely good deal for the Sixers. Kings could implode if Rondo+Cousins+Karl dynamic is bad, which it probably will be. Potential lottery reform would make this trade even better, and it also frees the Sixers to stop tanking and still get top-5 picks.