Actually, One-Way Transformation can be applied to your Normal Identity as well, so it's an easy mistake to make. I've actually created some pregens for a game I'm playing with my FtF group that I might offer as a
PbP game (but not in Living Supers, in the regular Talking the Talk) if someone persuades me in the future, and several of them have a Normal Identity Drawback. It's based on Fullmetal Alchemist, so you might recognise some of the names. Here are two of the characters' normal identities, to give you an idea of what I think is a reasonable power for a Normal Identity (note that both of these are PL 10 150 point characters).