First of all, thanks Andrea for all the great work! It looks pretty darn good.
About what have been said up there, the upscaled DVD scenes are visible, for example the last scene before the ending credits with the RATM song is from the upscaled DVD.
Unfortunately, the HDTV version is slightly cropped on the left and right sides because it's Super 35 and not full open matte. Plus, some scenes suffer of fps glitches... So I don't think it's a good idea to use it as a source.
The best way to me is to leave the clipped whites and contrasts exactly the way they are on the Blu-ray even if it's not theatrically accurate and only change the color grading which is the most important thing to everyone I guess. This is just my opinion anyway.