For Shadowcat's, I understand what you meant, stormfront. You want her, like Vision, to be able to control her entire density, both for becoming intangible, and for being diamond hard. Personally, I don't really think she needs one. Not all mutants can have super-lethal awesome razorsharp badass powers, when people get caught up in trying to make mutants super-lethal awesome razorsharp badasses, we wind up with ArcAngel. Regular Angel is the way to go (and I like his healing power, it actually makes sense in the context Austen gave him)
Wolverine surviving the nuke happened in the crappy Venom Tsunami series, take it, not with a grain of salt, but with a pound of salt.
I don't mind Iceman's secondary mutation, though I think it's kind of stupid, he was powerful enough originally. As long as he grows some icehair, it'll be okay though, he just looks stupid when he's bald, imo.
Aww, NO, I love the bald ice man, come on, he looks great. I liked the metal wings, but the authentic ones are beautiful too, they are both great but they give off a completely different feeling. It would be cool if he could change his soft, sweet, gorgeous wings into hard, sharp, metal, lethal wings when he got pissed or was ready for action!!