Unfortunately, not enough for me.
It's just MOP-style band aid. Back in MOP players said, that they didn't need rep grinds - Valor rewards should have been available directly without any gating and rep grinds should have been optional. And rep grinds were nerfed a little bit within duration of xpack, but problem had never been solved.
Same here. It's just small buff. Just +105 anima per WQ for spending lots of anima, that isn't even account-wide. And my calculations show, that in order for anima grind to be viable for me, buff should be at least 500%. Current grind binds me to one character only, cuz even if I would grind 1500 anima per day, I'd finish my job by July. And of course I won't grind 1500 anima a day. 500 is my max. I've never grinded WQ for reps and I'll never do it. This leaves me with being able to earn covenant rewards within whole xpack on one character only. And this rewards just aren't worth it, sorry.
By overstretching this grind, Blizzard simply kill covenant content for many players, who just can't grind more than 500 anima a day. And as covenant content is major content in SL, then almost whole SL's content is dead for me. That's why I'm unsubbed now. And will resub only to get flying with corresponding renown catch-up.