Rather then adding Merida to the Princess line-up, what you should do is, take out Mulan and Pocahontas. And make a new line-up of like “disney girls” or something.
With Jane, Pocahontas, Merida, Mulan, Eilonwy, Kida, Esmerelda, Meg, etc. Cause they all fit together much better then Pocahontas, Mulan and Merida do with the other princesses. They just seem the odd ones out cause they aren’t super girly and have huge glittery princess dresses!!