if you want the game to be balanced stop having champs that do everything
if you keep releasing champions that have overloaded kits the game will never have consistent diversity because whoever is numerically stronger from patch to patch is who will be spammed.

is an excellent counter, from personal experience.
) and I would love to see some of the less popular picks become popular like taric and zilean.
(pretty balanced out though)

, and it isn't 



support and the only times I've seen them support are on free week rotation or when I play them myself. Even when Dj Sona was released the like 99% Sona pick rate as a support died in a couple of days.
alot because she has a fairly long range aoe stun, a knock up, and a huge slow if she builds ap. plus the move speed she brings to her allies so i play her anytime i have to support. ON the other hand most people don't see her cause there aren't alot of support mains so everyone who gets forced into the role picks one of the ones they've heard of before....