Games are about having fun, you know? And fun comes in different packages for everyone - some roleplay, some do silly stuff, some speedrun.
Despite rarely using Santa outfit - I’m happy that IO give players a chance to get goofy if they want to. I really loved the ability to lay down on Sapienza beach in Santa outfit or to assassinate Jordan Cross (ho-ho-ho, what a naughty boy) in the same disguise.
If it comes to Corky the Clown - why not. I’d welcome it both ways - as an easter egg or an actual outfit.