During play, I have noticed that if the group as a whole decides to change or retroactively disallow a certain move or story segment, the inability to edit what you have written makes it impossible to change. I understand why that is a necessary evil, so that you cannot invalidate another player's move retroactively, but perhaps doing something along the lines of: allowing editing but showing edited text in addition to the original text (so as to not invalidate the other player's moves), or making complete edits only allowable by making all of the players/narrator vote on the edit before allowing it would also work.