Harmy said:

I will definitely put some more work into the Executor reveal shots - they come from '97SE and the dirt is exactly the same as on GOUT, so I asume it was always there, nevertheless, I will probably attempt to clean the shots up somewhat and maybe look into some other sources as well.

Isn't there an way to "simulate" the GOUT by basically using material from 2004 or the blu-ray (same with the snow speeder scene)? I don't know how much alteration really is in those shots but they just look cleaned up to me in the first place - nothing the complain about, like your recreated credits of SW. So the loss of detail seems very painful to me but I trust your far better judgement and may be corrected.