Useless Sion passive

I feel like the current sion passive is useless, barely has any effect on the game and basically just creates a little chaos after you kill a Sion. A much better idea in my head would be a short oppertunity to stun an enemy summoner instead of the running "mayhem" he becomes now. Even cooler would be a mini sion ult, let me explain myself. What if, when Sion dies, he runs into a direction you aim him at (give players about a second to chose the direction after Sion dies) Sion starts sprinting and the first enemy champion he runs into he grabs en rams him into the first object (wall/tower) he encounters. (kinda like a combo between poppy E and sion Ult) Ofcourse this passive should be given a max "runway" so that he cant run it down mid with an enemy champion under his arm. Just an Idea