I'm not a fan of review bombing, and I think it's current player score (2.2 / 1-) is an unfair result of that; the over the top backlash to the changes. That being said, I certainly wouldn't say the 86 / 100 critics view isn't reasonable either. It had issues at release, and it's gotten worse since then. My recommendation would be to give it a few seasons to get into a better shape before picking it up.
It's worth noting that Diablo 3 went through similar pains upon release; though with less "read the room" type issues like they're having now.