Neela (atys)
If that's not an option, then what about changing the rewards that are given so that useless cats are not given to P2P players?
As far as I understand, most of these are hardcoded, thats the reason why they are still in game. It would be to much work/ not worth effort to remove/replace them. Seems to be a similiar problem with all the kill goo animals missions that are still around.
But to make an option to enable/disable the permacats should be not that complicated.
What is needed is a "button thing" to enable the perma cat again after disabling it by clicking on the icon (disabling like consumable cats). I think a simple object compareable to the camp fire starter could do that.