Ragabul the Ontarah wrote...
Having a dominant trait doesn't mean it's your *only* trait, nor does it mean that you don't have individualized reactions to whatever you perceive your dominant trait to be. If this weren't the case, all mages or all black people or all "mothers" or anybody with a "master status" would be completely homogenous. The fact that a mother finds her identify as "mother" more important than anything else doesn't mean she has no opinions on anything else and never thinks about anything else. She is only forced into the master status of "mother" constantly when her kids are interjected into the story over and over again. Find a reliable babysitter for her and send her on a trip to Vegas, and you will get other traits besides "mother" to manifest.
On a personal note, I'll just add that I find such characters extremely boring and predictable. I know everything I need to know about a mother bear as soon as you utter the phrase "mother bear." What incentive is there to explore more?
Just because you know the "what" doesn't mean you know the "how". The presentation and the nuance matter. For example, there's a well-known genre in anime called "magical girl", where young women are granted mystical powers, become super heroes, and use them to fight demons and evil. It's a very established trope, with dozens of examples. However, the particulars vary a lot, causing some to be better than others in different ways. One of them in particular painted an extremely dark version - the magical girl gains her powers by making a bargain with a cute magical creature, and over the course of the story, discovers that the bargain she made was actually Faustian, and the evil witches she has been killing were all former magical girls that made similar bargains, and that she will eventually become one as well. The symbolism and imagery used to illustrate this was there from the beginning, but it starts off extremely subtle and grows as the story progresses. This is a far cry from the more simplistic love and justice of Sailor Moon, the prototypical example of the genre, despite the general story framework and genre being the same.
Just because you know the theme or main drive doesn't necessarily mean you should dismiss the way it is presented or handled. Just because someone is pro-mage doesn't mean that you know all you need to know. Someone who is pro-mage because he was born a mage and lived in the circle is very different from someone who is pro-mage because he's been possessed and then de-possessed and believes he can cleanse all mages from attracting demons in the fade once and for all, who is very different from someone who is a former templar that discovers he had magical powers himself and had to decide for himself what it really was all about. Context matters in how interesting a character is. At least, it does to me.