Uh to be honest, I don't think it is in dire need of a rewrite... It's not a great one by any stretch of the imagination, but it isn't that bad to the degree they need to do a full rewrite.

I generally don't like recommending 'MMOs', if we can even call it this now, if the biggest/sole attraction is the story, and besides, the game already has several really bad points, notably the actual start of the game which is a good 50 hours of slog to get through, before the story even gets interesting for HW, and then once again to another poor performance of SB. If we're looking at recommending this game on story then ARR is a big no. Either it's a good 15-20 hours of skipping story or a solid 50 hours of slog with some brief good moments.

and if we're citing other threads as being indicative of anything, need we be given the reminder that there was a similar thread for Endwalker which reached 900+ pages? If this is the case, then we've had maybe 2 expansions that are good out of 5.