personaly i think it would be better if they had waited más to make a sequel,they didn't let frozen to become a classic ,it´s más like they want to make money and no frozen fans are getting tired,But i won't talk about it,since the sequel is más than confirmed i´ll say what i think would be terrible to happen
1-Hans becoming good
He was supossed to teach how the first guy is not allways the best. And not every beautiful person is beautiful inside. So making him good would mean "Hey,he´s hansdome and thats cause he should be good" o something like that.
If he gets reformed there is no way there won't be forced o unreal
2-Duke of Weselton having a main part
He was a decoy villain in the first so he doing it again would be kind of anoying
3-Anna having powers
I liked the fact that the heroine of the story is pretty normal and Valiente , normal heroes can be awesome too
4-Love story in disguise
the hunchback of notre dame 2,while not so bad as every people say, it´s only reason to exist is to give Quasi a girlfriend.
frozen 2´s purpose shouldn't be limited to give Elsa a amor interest
even if they introduce one for her i don't want the plot going around it
And the siguiente one is for the fans and not the movie it self
STOP THE MAN BASHING:
Frozen´s aesop instead of "don't give up on your loved ones" is often confussed with "you don't need a man to save you"
cause they did need a man to save them (Anna needed Kristoff to survive and if it weren't for Olaf ,both sisters would be dead)
So i hope the fans stop hating on men cause thats not what the movie wanted to say.