Discussing the value of the Lakers 2027 and 2029 picks reminds me of the Steve Nash trade. Lakers traded 2 firsts ('13 and '15) and 2 seconds to the Suns for Nash in '12. The '15 first was top-5 protected in '15, top-3 protected in '16-'17, unprotected in '18.
Suns traded that Lakers pick away in Feb 2015 (when the Lakers were the 4th worst team in the league). They would rather be Brandon Knight's 3rd team in 4 years than have a pick from the 4th worst team in the league. (Not saying that to criticize Knight, but how valuable was he if 2 rebuilding teams were willing to trade him away during his rookie deal).
The Bucks apparently valued Michael Carter Williams more than that Lakers pick. (Reigning ROY of the year, but I think a lot of people already saw him for what he was).
Sixers took the pick because Hinkie was in the middle of leading the process and getting as many picks as possible.
Now I personally believe teams didn't think the Lakers pick was that valuable and the thinking was: "So the Lakers will pick top-5 this year (2015) then go out and sign some top free agents (LaMarcus Aldridge, Kawhi Leonard, Jimmy Butler, Marc Gasol, Goran Dragic, etc.) and the pick won't be that valuable in 2016. Better get some value for it while we can/don't want to be stuck holding that pick. Lakers have never missed the playoffs 3 years in a row."
Can you imagine Danny (or most GMs) trading the '19 Sacramento pick the C's acquired in '17, or the '20 Memphis pick the C's acquired in '15, or any of the Nets picks like that?