Re: Pepper Potts as Rescue
Making Potts Rescue is part of the canon, wheather some like it or not. I think it would make logical sense from perspective of what we see in the trailer. Obviously Tony is obsessed that he can't protect Pepper, and after what happened in New York he was thinking that he almost lost her.
Building her, her own suit makes sense from a perspective on how he can constantly potect her. From the trailer we can see, she was kidnapped or something, and so maybe the suit is build to "rescue" her.
Honestly it's not a big deal.
“Whenever you see somebody crossing over to something it gives it pop. Like Murder She Wrote and Magnum [P.I.] — great crossover. I got excited.” Joss Whedon on Spider-man joining the Avengers.