Cho'Gath's ability sizes should also scale with his size!
It just seems really weird to me when I see a 3 story tall Cho'Gath, but his little roar cone is smaller than the width of his character, so that got me thinking: it would be a lot more consistent if he could make bigger roars and bigger spikes as he grew in size, and instead of letting him deal 1000 true damage, his thing could be more based around AOE.