I plan to develop such a fork in the future, mentioned a bit in this thread.
I think another way to make Anki easier to use for beginners would be to simplify the Anki GUI to such levels that no instructions or manuals are needed. e.g. if I make FSRS the default algorithm and incorporate an add-on it could have two buttons so I don’t need to explain about the buttons. Similarly many non-essential features can be disabled or hidden, such as deck options, browser, editor, etc. plus I can incorporate all the standard and popular add-ons from the beginning.
But I’m thinking of this fork as just advanced and personal add-ons, so I’m not thinking of a generic fork such as the one discussed in this thread. e.g. if I introduce Anki I need to explain how to download Anki, how to configure it, how to install recommended decks and add-ons, if I create a fork of Anki I can package them in one click and distribute them to new learners.