Yuumi Nerfs??

So we've had Yuumi for a bit, right? On release, she was kind of weak, but Rito keeps nerfing her abilities. Honestly, I've played Yuumi for a while and there's nothing special about her. The one thing I'd say is the most OP about her is her untargetability. Other than that, once she's not attached, she's fragile and very immobile and her Q does horrible damage, and that's not because its powerful! Her cool downs are long and disappointing and it makes you feel like a terrible support because you can't get your heal at the right times you need it and your allies die as a result. Then you attach onto someone else and they die too, and the cycle repeats. I'd really enjoy a Yuumi buff sometime, or maybe even a rework. She's a champion that definitely Rito spends too much time trying to make her less of a good champion. Thanks!