Q and W changes for Cho'gath that I want to share with you.
https://imgur.com/dhtIHEG
To me Cho'gath is the Kaiju ambassador in Runeterra but it's not shown well in game, so here is what I think might fit his caracter.
Q: Cho'gath slows his movement speed to empower his walking cycle. Everytime Cho'gath walks, causes an earthquake in 2 zones, the bigger zone slows enemie champions, the smaller zone (wich is closer to Cho'gath) will knock em up. (Note: The bigger Cho'gath gets the wider the zone will be).
W: ?Mana every second. Cho'gath screams in a cone, dealing magic damage and knocking minions and monsters away, and causing enemy champions to be feared if they stayed in the cone for more than ? seconds. (Note: Cho'gath can scream while walking).