There are multiple reasons why Weak Aura's need to go. They actually limit design encounter, they over whelm new players and essentially make an add on required for any kind of content that matters.
https://www.youtube.com/watch?v=CXx8ZhIzdRQ
This video opens a lot of holes.
Max admitting he wasn't a strong enough player to raid lead and play the actual game. Basically making the game 21 man raids instead of 20.
Max said he does it because he knows he's the best at it, but that's very subjective, if WA's go away he can't sit there and simply tell people when to push their buttons.
I'd like to see them go.