The incredibly easy way to fix Inting Sion
Solution: Make it so when Sion enter's "Glory in Death mode" his Attack Damage is reduced to 0. Instead, buff and re-balance his %HP damage per hit, and give it a AD Scaling where X amount of AD gives +% amount to each hit. Also de-activating being able to use Demolish rune while in this mode for good measure.
What this does: This effectively makes him unable to damage turrets in his death mode while still keeping up his general damage against champions and keeping both Tank and AD Sion still viable via the AD scaling, at least vs champions, since the %HP on hit would not apply to structures. It sort of sucks to have to resort to this but i think everyone can agree the current alternative (His Live version) is much worse. His passive was made around the concept that he gets honor via taking a champion to the grave with him like he does with King Jarvan in his lore, not mindlessly hit a tower death after death.
Inting sion is a problem because he can damage turrets after death. The playstyle promotes and effect similar to Inting Tryndamere but way worse because of Sion's ability to both Wave clear, be very tanky, and scale very well. Plus his general ability to Run rapidly down a lane using his R and clear everything along the way has been causing mad split pushing frustration and controversy for over a month now and if becoming steadily more popular and harder to deal with as players get a hand on them. Not to mention Youtube is full of videos of this promoting the ridiculous exploitation of this playstyle.
This is not healthy split pushing strategy. It isnt one where you even need much skill either. Please, lets be rid of it. A champion's viability should not be define by his ability to simply skillessly and unstoppably destroy structures by going 0/20