I think food sales are not a good idea for all the reasons Anna mentioned.
A permapet sale could be cool but what I like to see best is a potion available during the sale of special editions which makes it possible to permapet these specials but for a more appealing price.
Because I think we are all hearted with these creations and indeed it can be a large series of cats
If it was possible for the community to make these cats a permapet with a special lower priced permapet vitamin limited to specials only and limited available during the sale of a special that would be awsome.
I try to permapet all specials as well but it are a LOT of kitties
