Actually I didn't mean the "White Devil" part, that part already scares me.
I'm talking about what happened to her in the past; her over doing it almost costed her her life, in some way it'd be very interesting to have an episode completely devoted to showing the viewers how she got back up, what she had to go through, all the pain, all the false hopes from the doctors, and even perhaps her friends feeling she wouldn't make it through.
That alone is worth a short OAV; or perhaps even a movie to boot. I don't know why, but when I see anime characters struggle, it makes me very interested in knowing what 'they' had to go through to get back up, but it's annoying not knowing what she had to do.. and not that just adds to the intrique and excitement.
Who knows? Perhaps Nanoha will over-do it again, perhaps she'll end up getting herself seriously wounded once more, only this time she won't be able to continue.. There are an infinate number of possibilities and each one extends into a different realm of possibility.
But again, what are the chances that the group that is making this series could expand the story line? Go with a series that take's place between A's and StrikerS?
We will just have to wait and see...