It's really sad to see Cass doing so poorly
Honestly, out of the 6 major reworks, Cass was the one I was most excited for, I just liked the ideas they had for her and thought they were really smart. Which makes it even sadder when she has the lowest win rate in the game. I'm not sure if it was sololy because the way Riot balanced her kit's new utility was done correctly or just that she was under powered, but I really hope the up coming changes in 6.10 and the ones she'll likely get in later patches fix exactly what went wrong and makes her what she could have been.