Cho'gath

He needs to become bigger, like for example, if you get to 18 ult stacks you should gain a percentage of units or something. Also if you are at max size cho's stomping should gain audio. People on your team would be able to hear it if cho is near them even, and people on the other team would only hear it if they have vision of him and he is close enough. The range of the audio increases with with his size.