How about an AD Ratio on Master Yi's W
The thing about Yi is that he's an all or nothing champion. That's what his kit revolves around. His Q cooldown resets for every kill he gets but his Teamfighting potential is absolute crap without dying immediately or getting blown up since he has literally no cc. Giving him AD on his W will give him more health regeneration and promote better teamfighting. Riven has an AD shield and tons of crowd control, so why not good old Yisus? Just an idea.