User blog comment:Mr. Xemnas/Underrated villains that deserve popularity and more recognition/@comment-1895174-20130308222804/@comment-3317214-20130310065524

Yes, CA:TFA is the exception. But there's no strict rules to this. They can do whatever they want. They don't have to give Stan a cameo in anything. But they choose to to honor him, and as a nod to the fan community, and that doesn't necessarily have to be in strictly Stan-created-character-movies. Can't he just have a cameo in a Marvel movie, because it's a marvel movie? But this isn't really important to anything... I just wanted to say, I think you're over-thinking it. They don't make a rule book for this stuff.