I'm fine with no villain. Frozen would have been a vastly superior movie if instead of making the one guy a villain, they made him go after Elsa legitimately trying to save Anna, but due to his over aggression, and trying to harm Elsa Anna asks him to leave at the end.Still nothing from Frozen 2. I thought we would have at least gotten a teaser by now.
I do hope it has an actual villain in it and not a twist villain again. It was a novel idea for a while, but we haven't really gotten a traditional Disney villain since Mother Gothel, and the last actually compelling villain was Doctor Facilier.
You wouldn't really have to change anything more than 2 lines and cut a scene at the end and the villain would be completely gone from Frozen and it would be an actual good movie instead of just a decent one.