Cho'gath. Even my friend, who is a Cho Main agrees that he needs a rework. His kit, while fine for blind, is too easily countered when everyone on the enemy team sees him in draft. His Q is telegraphed so much that even Helen Keller could dodge it, his reworked W backfired, and his E just... doesn't help. The only thing in his kit that shouldn't be reworked, and should always stay, is his Ult. A model and visual update would be great, his lore doesn't to be remade though. Keeping him as a Tank is a must, but making sure that he's not turned into a jungler would be nice, seeing how we need a support voidborn more than another jungle one. Making it so that he has better skills in his kit so that he isn't easy to counter pick, but leaving it so that he can be counter played would be key. Cho'gath needs to be a threat, he needs to be the terror of the void. A 1v1 should never be decided by dodge his Q. It should be hard fought on both sides, and honestly, in my opinion, cho should have the upper hand in a 1v1 against most top laners unless the enemy is ready for that fight.
To sum it all up, he should be made into a tank that can bully his lane, allowing him to actually be threat throughout. Give him ample ability to stay in lane and if the enemy laner doesn't actually try to learn and take him down, I'm fine with him getting huge. Like, his theme, his lore, his looks, and his gameplay should all reflect that he's a threat. He's not an easy take down.