I have been looking over this whole thread, and I have a few questions:

1. Why are you adding chromatic aberration? The OT were shot in single-strip Eastmancolor, and (aside from those dye-transfer UK prints of the original) were printed in single-strip Eastmancolor. The fringing of Technicolor came from the fact that three color records were merged - most of the world wouldn't have seen the first film in 3-strip Technicolor, and nobody would have seen Empire or Jedi this way because no IB prints were ever made.

2. Why would miniature shots have anamorphic blur? The effects were shot in VistaVision, which was not anamorphic - they were only printed down to 4-perf anamorphic 35mm in the compositing stage. So the only anamorphic distortion would be from printing the effects elements down to Panavision, there wouldn't be any anamorphic lens distortion in the actual filming of the miniatures. (Though I'm sure they took the distortion of the live-action scenes into account in the optical compositing process, especially in Empire and Jedi - this article for example)

I hope I got my info right. Anybody who knows more than me (because I certainly don't completely know how all this stuff worked), feel free to chime in.