Palin's days in elective politics are behind her. I don't think she was ever truly prepared for the merciless attacks on her reputation and family that she endured in 2008, made even worse by her own running mate leaving her to twist in the wind. I doubt she'll subject herself to this again.
Agreed. Palin is just fine where she is, commenting from the sidelines.
Her best path if she wants back in would be something like Secretary of Energy. Some lower level cabinet post.