Honestly, I love my cats....but I really don't care for feral ones. There are enough cats in the world. There are tons of endangered species that will be gone forever once cats hunt them to extinction. Climate change is already wreaking havoc on wildlife, we don't need to add to it. I'm A-OK with hunting or killing feral cats, and if it's easier to implement those things by declaring cats an invasive species then go ahead and do it. I recently watched Shooting Cats: Australia's War on Feral Cats (NSFL, gore, obviously) and was sympathetic. I'd probably be hunting feral cats as a hobby/good deed too if I lived there.