Those 16mm caps are very interesting, thanks for posting. I have been trying to get my hands on a good 16mm copy for years. They still look more like the Wowow to me with fading and a bit of and red shift. How did you capture those? Can you post a couple of caps from the ark opening scene? Particularly one of the ghost shots, close ups of Indy and Marion or the fire sweeping the altar? That sequence looks the worst IMO, mainly because of blown out highlights. We can debate the color all day long and never agree, but blown out areas are definitely not correct, that's a mistake. Interesting that TOD seems to have the opposite problem on BD: red instead of orange.
When you say the wowow probably is accurate to the negative, what do you mean? Because if it looked like the camera negative the color and brightness would be all over the place. If it looks like the internegative then it would be accurate to a perfect release print because the internegative has all of timing set based on answer prints. So I don't really understand your comment.
I almost bought a 35mm print of Raiders recently but it was too far shifted to red to be useful. I do have a Super 8 condensed version on the way, I am very curious to see how it looks. I saw it on super 8 many years ago but don't recall it looking any different.