My main issue is just the confusion. I understand the contracts say they can both use the Quicksilver and Scarlet Witch, but I can just see a lot of people who aren't aware of all of the BTS stuff being really confused by why there are two different Quicksilvers in the different series. Have we ever had to versions of the same character in two different series close together like this. I just remembered there are the two modern day Sherlock Holmes, so I guess it can be done. But those are also two very different versions of the character on two very different shows, and I have to wonder if the two versions of Quicksilver will be that different It's also IMO a little crappy to throw his casting out there so soon after it came out that they wanted to use Pietro and his sister in Avengers 2.