I'd enjoy seeing one and there does seem to be a phase of creating Disney sequels. However, there's something so special about the movies that aren't made into sequels such as Snow White where the movie stands so well on its own in a timeless way.
I think Frozen is a good movie, and although I do not quite understand the craze it has created amongst Disney fans, I would like to see a sequel. I think there is a good chance of one, but probably not for several years, because they have so many other things planned. I think that is why they settled for a short for the time being.