Irelia W rework idea

Instead of using her blades for a defensive formation that reduce absolutely nothing and is useful just to tank a turret shot after dive or get a stack.. anyway instead of that make a new completly ability, that execute champions, how everyone have in their kits. My idea is, Irelia kills you with her hips if you are under 25% hp or something dunno 100% ad scale + 500/800/1000 HP dealt as true damage.