The other major change between the original Mulan and the remake is that the new movie certainly doesn’t appear to be a musical.
Not only is there no music in the trailer, but the look and tone of the clips certainly don’t look like full musical numbers would fit.
It’s an interesting choice if only because Disney has shown with the success of movies like Beauty and the Beast and Aladdin that the closer the remake is to the original, the more successful it is at the box office.