I think Mid-Godly should be treated like High Godly, but instead of asking to specify between concept, history and plot, it should be for soul, mind or both.
It can be reworded like this...
Mid-Godly: The ability to regenerate from the complete erasure of the body alongside with an immaterial part of themselves, may it be the soul, mind or both.
Note: For Mid-Godly Regeneration, be sure to specify what part of themselves did the character has shown to regenerate alongside the body within their profile pages. For example: "Mid-Godly; Soul. Returned from both their body and soul erased."