Alright! We all know what's coming in AoU and many people have been speculating about who exactly will die in AoU! Well, who will they avenge!!
I think I have the answer...
First, a little digging into MCU's next big happening (most probably), Civil War. I'm sure by now most of you know what exactly is civil war and what you should expect in the movie but one of the biggest problem with Civil War happening is... Tony Stark himself.
Yes, the personality he has in MCU is quite different than the comics and that is one of the reason why I don't see Civil War setting up the way it should but I think Marvel has answer to that also... and that lies in AoU!!
For Civil War to happen, Tony Stark needs to change, he needs to be different, a different personality altogether... and as we have been reading that there will be a lot of destruction in AoU, a lot of deaths and among those dead people, will be the reason to fight back... Pepper Potts.
Yes, I believe Pepper Potts will die... setting up the Avengers - AoU.
She has to die...Pepper Potts death would be a big enough event for Tony's personality and attitude to change. A genocidal robot that Stark (accidentally) created causing death and destruction on a global scale plus Pepper Potts dying should just about do it… he will take bad decisions and will find the Captain standing in his path.