My opinion on Yuumi (SAS)

SAS = short and sweet.

She's atrocious, like her entire identity is a bizarre gimmick by itself. She's weak, which is entirely her kit and NOT the numbers that she has. It's apparent that she is supposed to be a stat stick of a support with a slow/root ult to supply some group crowd control, which is great and all, but that's all her kit is. If riot wants her to be viable, start off by firing her designers, and then rework/start over with her Q and E. (Consider lulu's on ally/enemy concepts.) Then reduce the overall effectiveness of her ult but make it up more often.

I cannot stress enough that buffing her numbers to FORCE viability would be a severe injustice to the community and serve to make her a nightmare to deal with.