Potential Fizz Changes in Assassin Update?

I was just curious about the scope of potential changes to Fizz would be. Out of everything on his kit, I would love to see changes to his W and Passive. His Passive, at least to me, feels pretty lackluster in terms of gameplay. Sure, it lowers harass damage and can let him take less damage in the jungle, but I feel like it kinda makes Tank Fizz a bit more attractive and doesn't have much use for AP Fizz outside of laning. It's not something you really notice either, it's pretty invisible. I guess that unit collision ignoring is nice sometimes. And his W I think is potentially the biggest candidate for changes considering it's probably the main reason Tank Fizz is a thing. So seeing it reworked would be nice. It'd be cool to see either of these abilities changed to help make his assassination pattern more diverse.