If the nerf everything about her then add a suppression to one of her abilities with a CD of 180 seconds rank 1 then you'll see her winrate and play rate go up nicely. I mean she'll be trash to play, but that's not the bit that matters right?
Winrate and play rate are not the defining factors of a champions viability. League is filled with mini interactions that go far beyond being game deciding.
Karma needs work because she does not fill any role she is meant to. She's a mediocre support, and a bad midlaner. She can't jungle, nor can she play top lane. She is never going to be an ADC.
The only thing she actually CAN do is be a Support Midlaner for the pro's, and even there she isn't really very good which is why the pro's gave up there too.
She is not the only one in this state, the earlier dig being a defining example of a champion destroyed without remedy under the excuse of "his play rate and win rate seem ok...."
Hopefully we'll see the pair of them in the line up for VGU's next week.
Downvote above.