If Cloud9 manage to win worlds, their team skins should give Blue Sentinel a visual change
Like how using using Project skins or Pool Party skins during their respective events changed the minions visually, if a few people use C9 skins, changing Blue Sentinel visually for your team's side would be pretty neat
I even made concept art for it using my top percentage paint skills -
https://i.imgur.com/uNelWVX.png/img
edit - This did not age well, yikes