I love it! Especially how drastically that would change the scenario, from “Mercenaries struggling not to lose their cool and reveal themselves” to “Mercenaries who are genuinely stripped of their power and trying to cope with normal life.”
Would you mind if I included your idea as an optional rule?
Heck, maybe I could even add Traits that temporarily override and take effect during the transformation. Traits based on 80s kid movie archetypes… :D