[quote=@MadBull]
I declare interest

edit: I have a question, does the fact the children had to hide their powers mean that they can't include severe physical changes?
[/quote]

You can definitely include severe physical changes! You're just going to have to wear a cloak or something to hide yourself! But this is post-apocolyptic, so it's not uncommon for people to have physical changes due to radiation and bombing and whatnot.