The reason for all this backlash...

Is that Riot is trying to fix things that aren't broken. People were happy with the old Fiora's splashes and models. People were happy with the old HUD. And yet, for some largely unexplained reason, Riot feels that is should replace them with inferior, as is the majority opinion, counterparts.

Of course people are going to be angry. It's the same type of reaction people had to "new Coke" or whatever.

Admittedly, Fiora's gameplay update is pretty nice, but people didn't like her old gameplay, did they? Maybe Riot should stick to only changing things their players aren't already satisfied with.