I still don’t understand what reason would be strong enough to completely rewrite of half the saga to keep one moment safe.
It is not about one particular moment. It is about keeping the quality of the saga as a whole. I think only a rewrite could do away with stuff that really bug me about the PT: the way Jedi were handled, what the Clone wars was really about, Yoda’s character, the visuals, the costumes, etc.
For example, I think the Tartakovsky Clone Wars cartoon was really pretty good. Sadly, I cannot fit it into my “personnal cannon”, because it obviously needed to tie in closely with the world of the prequels.
Of course, if you actually enjoy some elements of the prequels (not that there’s anything wrong with that), rewriting it from a scratch to fix some minor elements may feel really unnecessary. 😃