Maybe you're not seeing the fact that, first, we get ridley, a villain, then that helps create an intro theme along other rivals to a trailer revealing yet another more rival, King K, to hint that we MIGHT be getting a reurring theme as time is passing. Sure, it's too early to say there is a pattern with just 2 villains, but if we keep getting more, people will eventually have to accept it. Also, so what if they are highly requested? they STILL make sense for such kind of theme, otherwise they wouldn't feel the need to announce villain after villain character. They could mix it up a bit if it wasn't really a recurring theme. IF we get another villain next, we can't be in denial about the theme. As for now, it's just AN IDEA that some of us we think MIGHT be happening. It might, it might not, but we can't be close minded about the possibility. That's why the theme is just part of speculation at the moment.