Can't they make it whatever they feel like?
I remember hearing something about a Homebrew unintentionally sharing a TID with Persona Q, I can dig it up if you want
EDIT; How would they know before a title is published anyway :?
I don't have the answers. As I said, "homebrew cias being one of the suspected main culprets". I thought was common knowledge, that suspicion. I mean.. why not be safer than sorry if the option is there?