I have been posing this idea in a couple other threads and forums with mixed opinions and I wondered what the consensus here was. In the 'why has Sue never gotten a solo/mini' and 'most iconic woman character' threads, a poster mentioned that Sue is defined by the men in her life and the sad thing is that it's mostly true. She has grown in confidence and power since her Invisible Girl days, but that is the only development she has received. We know nothing of her aspirations and goals outside of her family or what her personality is like when she doesn't have to be the "glue" of the FF.
While her becoming stronger is great, she has to grow more character-wise too and Sue should be more than who she is in relation to her family and the men in her life. I believe her becoming a doctor is one step in the direction of her having a life outside of her family and becoming a more well-rounded character. It fits with her personality and adds to her history, I will post how i'd implement it another post below.
Sorry for the two Sue threads made close together, but I needed to get these questions off my mind.