Something intersting I noticed.

The top 3 winrate Champions are (ardent) Supports: Soraka, Sona, then Janna. The next 3 highest are tanks: Singed, Rammus, then Sejuani. The 3 after that are mages: Malzahar, Aurelion Sol, and then Anivia. 10th place is the first and only ADC in the top 30: Twitch.

Other than Ardent Supports which universally have like a 55% WR (except Lulu who is sitting on nearly a perfect 50) it doesn't seem like any class is particularly busted or garbage aside from over/undertuned outliers. In fact, adcs being the most complained about class would probably be weak right now without the grossly overpowered Enchanter subclass of Supports. Just something to consider before making a "(Class) is busted/garbage!" thread.