SO... why W Riot ?

My onestrick My life The only thing that I hate about her is that her W is just weird. Shes supposed to be like a fast fighter that is supposed to be hard to fight in big waves and also have bursty combos. But Riot, why make it so that she roots herself to mitigate only physical dmg and not gain any tenacitiy or anything? Yes, all dmg reduction was OP + disarm. But if you want to do full combo, that W is annoying coz you cant even cast anything during channel. Yeah, she not a assasin and shes supposed to have a defensive ability because shes made to be a BRUISER, but pls can it get changed to a new ability, just like Ezreal got a new w?