Looks a lot like your color balanced reel 1 of the LPP. That’s nice !
However, the blown out whites of the blu-ray remain in your attempt whereas Neverar resolved the problem in his work. So, I was interested about testing something : manually adjusting the curves of Neverar’s picture to approximately match yours, except for the far high color values. Here’s the (not perfect) result : http://screenshotcomparison.com/comparison/196918/picture:0 (compared to your last result and Neverar’s version).
Anyway, the question of the distinctive look of Tatooine’s scenes is still here and Neverar’s final result is probably the one that is the most correct.
I actually used Neverar’s result as a starting point, so the bluray’s blown out whites are definitely not there. I personally do prefer a more contrasty look, so that’s where the difference comes from.
Also, at this point the look of the Tatooine scenes is still debatable. However, I may have an opportunity to go to a private screening of a Technicolor print, so I hope that will provide some answers.