How will Season 5 be remembered in League of Legends history?

An overall balanced season tbh, every role could have an impact in the game. Til patch 5.15 came. It seemed like the begining of an end with an abomination of a Fiora rework. But the dreadful patch 5.16 left a gaping wound that could not heal. The overloaded, broken Juggernauts and the nerf to only beacon of hope against ranged ADC overlords - armor. The patch left in my opinion one of the darkest metas in the history of the game. From mid season 4's pushing meta with ,permabanned , pre nerf and Feral Flare , i have never seen such obvious disbalance and catering to high burst, high dps champions. And Pre Season 6 only confirms that League has the worst tanking system iin all mobas and wants to bring it to the ground. Between armor reduction, armor penetration, % missing health, % current health and recently % bonus health (i'm looking at latest buffs to your poster child ). Not to mention "dynamic groups" update, which will bring the terror of 4-5 man premades to your own ranked que. But atleast with these updates we know where Riots balancing team stands and would kinda admit that this game will never ever be reasonally balanced. I'm really happy with the time that league gave me, but i guess thats all i should expect from a free to play game.