Can we get some balance changes on Kai'sa?

So Ive been converted to support main( probably at one of the worst times ), and i have had my fair share of Kai'sa with me and against. She is a well rounded champion with high mobility, poke, invisibility, shields, stacking magic damage. This can be very cool, as it is, if she's on your team, however I believe with her current kit, that she is overloaded. nothing about it seems adverse to me, which is a common theme among many of the rifts champions. Like Nunu's q for example; very strong damage against monsters, however becomes useless against other champions. You could say that she's an add and her kit is good for being an add, however not all champions in their role have kits as perfect as her's. I even believe that some champions have flaws on purpose so the balance team has a wound to poke at to help balance the champion. How do you balance Kai'sa without making her useless? Her kit is too reliant on her other abilities that she's falling under the boat of rek'sai, who had to have an overhaul on her let due to too much mobility and difficulty balancing. Kai'sa is a hard carry with a great early game, a lot like vayne but without her flaws. she has an invisibility ability, a lot like vayne. So Im trying to say is, unless everyone is comfortable with a vayne that has a great early game, I think Kai'sa deserves low level nerfs to help balance her.