The role sion plays in late game team fights is so fucking boring
The Ult buff didn't change the fact that you're never going to be landing a maximum range ultimate when everyone has insane amounts of out of combat movement speed.
That being said, his role in late game team fights has become so stale i'm starting to lose my mind.
The only way to make use of sion's kit late game is to literally walk into 3 people, have your W shield popped in 2 autos, pop stoneplate, pop locket, and die immediately after. That's it. That's his** ENTIRE** purpose late game.
The whole "people need to invest CC into Sion to cancel his Q" is a myth. CC at later stages of the game are being thrown in every direction on low CD, you just so happen to get caught in cc that was meant for someone else on your team because of your big ass character model, mobility is at an all time high. There is no reward to landing a Q late game.
Gragas just presses E in your general direction with no effort, stun locks people for free. Rakan is able to engage AND escape if he fails (thats just because the support role is braindead so its whatever)
Why can't sion be rewarded for landing a telagraphed ability? Sion is balanced around omega low elo (gold 5 and below) where he thrives against actual morons.