Please consider taking a look at Sion's current state (Especially Jungle Sion!!)
Idk about anyone else here who mains Sion, but to me he honestly feels terrible to play as recently. I hate that his Q does barely any damage early-early mid game, and his E doing next to nothing in terms of damage the entire game except for armor shred. I guess he's technically balanced considering he's about 50% winrate even, but that's with a now record low sub-1% playrate. I suppose most tanks are doing quite meh right now though.
In my opinion, I think his twice-buffed W passive is the problem here. I wouldn't mind it being reduced back to 3 per minion if it meant adding some damage back to his kit. Unlike most tanks, Sion's abilities are way more telegraphed and have clear ways to avoid them. Thus, you should be rewarded more than you are now for hitting a fully charged Q early on. That was the case back then,but now it straight up feels like you couldve auto'd twice for the same amount of damage. Essentially, he shouldn't be terrible very early on as well as later in the game. It just causes the champion to feel super weak early then feel strong and then feel useless later on.
I appreciate the acknowledgement of AD Sion by compensating his base damage nerfs with Q AD ratio buffs, they still leave him left with a terrible early game. and tank has seriously been lacking in comparison lately too. I'd rather try to blow up the ADC with AD Sion mid-lategame rather than get kited/CC'd then melted by their carry as a tank. Of course,
Now a place where the nerfs really hurt is for Jungle Sion. Now that is quite an obscure pick, but prior to the nerfs Sion had a very good early clear but was still fair considering his ganks aren't very great until he reaches Lvl 6. The nerfs to his Q, W, and E hurt his early clear quite a lot. I would love to see a buff to his Q damage against monsters, because it does deal reduced damage against them. I would suggest increasing it back to 90% or 100% damage against monsters depending on if his E ever recieves any damage buffs.
Thank you for reading my suggestions/rant, and I patiently await Sion's return to his former glory (in top and the jungle). Until then, I will one shot with AP Gragas instead.