In-game quest: Shen VS. Zed

As you know in the lore of Zed, and Shen Zed kills Shen's father. But in game not much happens between them. If we added a quest like Rengar VS. Kha'zix it will make the game more interesting. If Zed kills Shen he could perhaps get a buff, or given something cosmetic for the remainder of the game like the Freljord quest. You get a crown from this. For example if Zed kills Shen a cosmetic he could get would be Zed now has a shadowy aura around him. This would be called for example "Shadow Rage." Now i'm sure Riot can come up with a better name than that, but overall something like this would very much change people's thoughts on Zed, and Shen with a quest.