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You describe #4. It was fairly ambiguous what they were talking about at the time (Beyonder thinks, about them whacking into each other, 'It affects their powers, but they're too stunned to notice'),...

Also true. :)

I think the main problem is that the reason is now outside comics.

Also:

You may want to check your history. As I remember it, people were up in arms about this one (and loathe it to this day)....

That different power per personality has happened before (Legion), but it's never been part of Aurora's power set in the past... not exactly.
(Jeanne-Marie once said that Aurora stops her from using...

... but her powers don't work that way.


Yes, I know what you meant, it's just your comment tied in so well with their power set, and technically after Walt's changes to her they do and...
~ Le...