I also thought Lynadin was cool to! I am totally rooting for it. But two things are getting in the way for me. 1. She is kind of in a romantic relationship with Scar. (At least its been hinted at) And 2 Lyn is based off someone Sanderson knows. So that would be kind of awkward.
But I had that same thought and I still want it to happen. I just don't think it will.