Would getting rid of the damaging untargettability of specific abilites be...bad?

Fizz pole, Vlad's trollpool, Yi's Q...Can all can execute an untargettable status that also does damage during or after that time period. How does it make sense that specifically Yi and Fizz are both basically assassin-fighters in a sense, but both have (or can have) a low CD untargettability? It's inevitable that Yi's gonna get a reset on his Q because assists count too, iirc...And Fizz' pole is just on a relatively low cd considering he maxes it first if he isn't jungle (even lower if he builds CDR). On second thought, Vlad's seems to be relatively fine cause he's not really an assassin (most people aren't gonna build him straight glass-cannon as well).

On top of this, it nullifies practically every projectile-type ultimate...And they're not even ultimate abilities..They're basics. It's like how Yasuo's windwall can block a tidal wave, ffs.

I'm not mentioning Elise because Elise doesn't do damage as she's untargettable, but each of those three champs do.

I'm almost positive that all three of those champs are nearly only viable...because of those abilities. And have been relevant in able-hands (and even maybe competitive at some point) since their conception. I'm not sure what to call that. At least you can attempt to swerve an ability off the side of Yas wall or just walk through it if you're confident you wont get smashed. There's no attacking untargettability...And if you try, you can get a helping of roughly 300-500+ damage late game (again, not so much of Vlad).

They're not really seen often enough to warrant nerfs by Riot, but when they ARE seen, it's often times a 'ok, we gotta kill this annoying asshole with his pole' or 'cc/kill yi first'. The only 'counter' is a silence that you have to hit in the first place if it's not pretty much instant like Raka's. Or hard-cc like WW. But even then, .

Before you downvote me into the stone-age, consider how many times you've had a though process where 'Fizz, Yi, (maybe Vlad) has to die or they're just gonna keep darting in and out via sustain or versatility and pure damage'