Remember the Yasuo vs Riven event? Riot created 2 icons, 1 for each team, in case the team wins. Of course they only release the Yasuo icon because he won, but I(as a Riven player) would love to be able to purchase the "Reign of Order" icon for 250RP, it looks very nice and its really no effort for Riot because it already exists. They just need to put it in the store, also why would Riot want to lose out on a way to make money?
This is the icon:
And this is me if Riot doesnt put it in the store:
Edit: btw this suggestion got huge support on /r/rivenmains so I guess it could be really worth it