I'd rather wait for the books to be done, then just have HBO animate where the writers abandoned the source material and redo some if s5 and on.. Redoing it would probably cost to much now. The locations are probably dismantled or allocated for the other GoT shows. Most of the actors probably want to move on and do other things. Also HBO would have to admit they fooked up their biggest franchise to date. There's no good in redoing it. I'd rather have more of the books added to the show anyways, I think animated will be the way it happens.