Horrible Kellogg's Rice Krispies Vanilla Flavour!

Bought the new vanilla flavoured Rice Krispies (unaware if the flavour) got home wanted some but couldn't stand the taste,it's horrible. What I would like to know is who asked them to change the flavour without proper consultation with us as the consumers? Couldn't they at least introduce the flavour by making limited stock and then get feedback not to change the entire flavour to vanilla.