Reading about Piper's possible powers I thought about the rest of the sisters. Paige is difficult to predict because of her whitelighter half and I think Prue would have had Projection being the oldest sister.
Phoebe's powers could advance into:
- Because of her Premonitions and Astral Premonitions she could develop Astral Teleportation the ability to teleport or project herself in her premonitions to use her powers to possibly change the outcome.
- Empathic Healing and Regeneration: the ability to heal others by absorbing their pain and wounds. And heal herself by transfering the wound and pain to someone else (demon).
- Empathic Mimicry: an enhanced version of channeling. She can copy powers and later reproduce them.
- Empathic Weather Manipulation or Weather Empathy: developing an empathic link with Mother Nature to feel and predict the changes in the weather. She could also influence the weather with her emotions to create rain, lightning, snow and affect the temperature. It's similar to the powers displayed by the Goddess of Earth only weaker.
What do you guys think?