Can we talk about some Cho'gath changes, please?

So let me start off by saying, I like his ultimate where it's at it doesn't need to be changed and stacks should fall off him when he dies since lategame he's very difficult to kill!

Secondly, I like his Rupture & Feral scream where they are as well, but fix the visual issues Rupture has please, seeing people just on the edge of it and not getting knocked up is annoying.

Vorpal strikes is awful in my honest opinion but this is up for debate of course, maybe change the ability all together? Maybe increase the range/damage? Either way is fine with me.

His passive is...Interesting but useless I find, it's a bad laning tool especially with all the life-steal/spellvamp available, Cho'gath has one of the worst passives (Next to Viktor's which forces his item and passive slot to be taken up.) anyways, let's talk about Cho'gath possible changes.