the writers dont seem to be afraid of Rogue's fate. If she took the cure, i bet they would be way more careful and say that Rogue in the movies is different from comic all the time, in a way of apologizing, for they know the blacklash would be huge. Instead, they say she is more confident and more mature. How can a more mature and confident person chooses the cure? Confident, for me, means she will accept her powers.
I dont think she will take the cure, but unfortunately, now i think she wont be at the final battle either. Her entire arc is still a big "?" to me, and im happy by that.