1.0 was really, really bad. So bad SE fired or demoted the members of the original development team that developed it and brought in Yoshi to lead a new team to fix the mess. And after a lot of examination and discussion, he came to the conclusion that the game was totally irredeemable and was beyond saving, and only by tearing it down and starting again from scratch would work. ARR was the result.
Now, there were some good things about it, and a handful of things I liked, but those few good points were drowned under by the huge stinking piles of everything the game did wrong.