I saw you're reading that thread of mine. In case if you like it, there are also the side stories from the other characters point of perspective. One of such coming soon.
By the way, there's an article I vaguely remember reading about Madoka, about "it's possible to make a wish that outruns its own negative effects, that closes over its own consequences." I wouldn't even begin to know where to search for it, but from the wording you used I think you may have read it to - do you remember where you saw it?