Simple Yuumi nerf idea

I've sometimes been seeing people complain about how annoying / strong Yuumi is as a support to where its just a huge pain to go up against her ( personally i feel that way about janna )

A simple nerf idea I had for Yuumi was just to make it so if she's attached to an ally that dies, she's unable to attach herself to another ally for 3-4 seconds. this makes it so that you have to make the choice whether to abandon ship and let that specific ally die, or put yourself at potential risk of not being able to fly into the safety of another teammates body for a short period of time just to try and keep them alive no matter what.

the point of this nerf is to make Yuumi become potentially more vulnerable and able to be taken out sooner rather than having to kill all her teammates and then her for last just because she can latch on to anyone at any time with no real drawbacks.