Sion Passive Idea

This might be a terrible idea, I dunno, but I think they should take a page from their lore with Sion's passive, instead of him going on a rampage when he dies(which, I get it, it should be great and satisfying, but it is one of the most unsatisfying things in the world if you're fighting anyone who knows to run when you die), I think it'd be better if maybe Death Surge was replaced with an ability to grab/choke an enemy for a set duration&dmg amount(remove being able to attack and just make it so you're faster when you die and can't be CC'd), I just feel like it would feel better, it'd be a much more reliable burst of dmg without threat of CC, like when Kog'Maw dies. It wouldn't be as powerful as it is right now of course, but you almost never get to use that power anyway.(you get maybe 1-2 hits in) And it would still have a place in team fights, as if you grab someone you're CC'ing them for your team for a brief moment.

I mean honestly Kog'Maw's ability is so much more reliable, and it does AOE dmg for team fights, sure, people can get away from Kog, but it's infinitely harder than getting away from Sion.