I’m not going back to TLJ, and am not interested in substantial alterations to suit this movie.
The feeling is mutual. Why retcon TLJ because of a faulty storyline. Fix the story first, then see if a retcon is really necessary.
One of the main issues with TROS was the non starwarsy beginning: a music video of Kylo on Mustafar leading to the jolting scenes with the Emperor. The beginning needs breathing room and coherence. This can be fixed.