Samurai Yasuo would be cool because he could be like the Wind Samurai from movies, the samurai can control winds to protect his Daimyo(leader). And Yasuo does look Japanese with his long Katana, medieval skins should fit Yasuo perfectly like how Sci-Fi themed Project Yasuo fits him too!! Tell me your Skin ideas for Yasuo!!! 
UPVOTE AS A YAS MAIN I LOVE THIS
My favorite skin idea: Warlords Yasuo His model is broken just to reflect what that mastery did to him.
I'd love a Half-Dragon Syvana skin. It'd make her effects look fiery and she might even have scaled armor and claws.
I posted a thread for Sengoku Yasuo a while back. Something with hakama and kimono, daisho, etc.
Oh, there should be a fox-girl ahri skin! and a black mage veigar too!
You mean, like, base yasuo? :P
