My theory, for what it's worth, is that Feige & Co. tricked us into thinking this was the beginning of the Multiverse storylines when what they were REALLY setting up were the mutants. Monica's DNA was re-written several times as she went in and out of the Hex and we saw what happened to her. Who's to say everyone within the Hex aren't going to be affected the same way? All those SWORD agents got wiped over with the Hex a couple times, too. And Darcy for that matter. If the MCU wants to differentiate themselves from the Fox mutants, this could be a very effective way: Wanda inadvertently created them. As for a coincidence that I don't think is anything more than coincidence, I re-watched the series this weekend and thought "Hmmm, Dottie could be Emma Frost if my mutants theory is correct..." so I went to look up what the character's 'real' name was and discovered the actress' name is Emma. For a split second, I thought I had the answer. :)