I have recently completed an edit of L8wrtr’s Revenge of the Sith fanedit that I feel matches what you’re all describing here. In my “re-fanedit” I have created a new crawl to establish Dooku and the Clone Wars and have removed all references to the previous two prequels. These include all references to Shmi Skywalker and the Chosen One prophecy, as well as removing some dialogue during the Dooku ideal that references Attack of the Clones. I’m still perfectting my crawl But I thought I’d share to let you know that it is (hopefully) possible.