I think that movie Race for glory: Audi vs Lancia will help. That kind of stuff. I like that DirtFish ''backstories'', where they are joking around. We can see that drivers can smile and bring them closer to us deadthlings. Also their different stories help. I like to read random stuff from past and current situations, where there is lots of stuff that someone may even don't know, happened.
EDIT: I kinda noticed that many WRC2 drivers do have woman co-drivers. Exposing them could bring some interest for audience. I think that generaly co-drivers do have minimal exposure and we barely get something from them. But actualy they have very important role.