Ideas for illaoi

So before I begin let me state that I'm not saying this idea is balanced by ANY means.

1.What if illaoi when she ults is immune to CC while still being able to take damage, so she can't be cc'd because she jumped in the middle of a teamfight and so she was only able to get one maybe two tentacle strikes off.

2.What if illaoi when she ults, her ult boundary will slow you if you walk out of it to stop people just walking out of literally everything she has.

3.Illaoi's Q and passive are reworked to make her more reliant on her passive and less on her Q. maybe her Q could be a slow or something while having less range

Again all of these are just ideas I was thinking of to try and make illaoi better, I'm not saying any of these would be balanced but I really feel like she needs something because right now she feels horrible to play.