How about instead of removing every alternate build you just balance them??
Maybe this is a crazy thought, but how about instead of removing the entire viability of AD fizz (and all the other off build champs that have been crushed over the years) we just actually balance them?
AD fizz is too strong, so what do we do? just remove it? Why? Why not just nerf it? Why does every champion have to be pigeon holed into one build.
Isn't it boring to have to build the exact same items in the exact same order every game? At what point do you just remove the store entirely and just implement an auto buy feature? If there is no actual choice in items and only one viable option, then having the option to buy other things is just a noob trap.
Riot, just do the friggin work to balance multiple builds on a champ, you have the resources. I know its a little harder, but if you need a few more dollars ill buy a skin.