She didn't need a nerf and DFG being deleted was a nerf. Her hitbox is so awful for her stun that people including myself thought it was bugged. Sure seems bugged to me. Her Q damage being 50 is equal to an auto attack, it's a joke.
She needed to have early game power and lane bullying to transition into a reasonable mid game. She lost that with the absurd Q nerfs.
Her mid game consisted largely of getting picks with her fully combo after a stun + DFG. DFG was deleted and her stun never works anymore. She has no mid game.
According to online stats her late game was always bad because it was always her lowest win rates. Now she's so terrible mid and early it actually goes higher the later the game goes, and that ends up always being far below 50% anyway.
Anyway, Meddler confirmed they will NOT revert the nerfs and will "buff" (lol Riot saying 'buff' is about as as trustworthy as a politician's promise) her stun width but not back to what it was. They supposedly did this before and nothing changed, you could hit a full sized Cho'Gath dead centre and it would knock him back but not do damage or stun.
Good programming Riot. That consistent 47-48% win rate at Gold to Diamond sure was oppressive, thanks for taking care of that bully of a champ by nerfing her into the next Diana.
http://champion.gg/champion/Syndra