Kass deserves some small buffs
Well, Riot finally did it. After countless nerfs and reworking/removing his silence, they finally nerfed Kass properly by removing 200 range on his ult, ending his reign as a permaban since his inception. His winrate now sits at a pedestrian 42.7%, so it's safe to say Riot has accomplished their mission.
Now that Kass finally no longer has super-mobility, the trait that made him OP since season 1, how about reverting some of the nerfs on his damage? He can't build a lot of AP due to his melee nature, accentuated by the change to his W, so his options are to build the tanky AP items such as RoA, Abyssal, and Zhonya's, which don't really give a lot of AP. Other melee assasins such as Zed and Fizz can build the more traditional carry style by getting lots of AD/AP because their damage scales a lot better with stats. However, the countless nerfs to Kassadin's damage means going straight up AP is dangerous as he has no safety net, unlike Fizz with his troll pole and Zed with his shadow dash. He did used to have a safety net with his silence and long-range ult, but not anymore. He should have been compensated for the loss of mobility, but he wasn't and now claims the title of the worst winrate in League.
TL;DR I think Kass needs some small buffs to his base damage after severely nerfing his Riftwalk. With his most powerful skill nerfed, Kass deserves to be compensated.