Who will die in Avengers Age of Ultron ?

A question that has been playing on many minds in the lead up to Aprils Avengers Age of Ultron is who is going to kick the bucket.

• Originally the easy money was on Tony Stark however as he is now confirmed for Captain America Civil War so that pretty much rules him out unless that announcement is the biggest twist ever.
• Then we come to Cap himself. The still at the top of the post from the trailer would like to make you think that he may be the one to go especially the broken shield being used as a symbol. However as he is also going to be in at least Civil War I don't see him going either.
• So how about Thor ? This is one option that I think is a possibility. Yes Thor Ragnarok is confirmed but as we all know "whoever holds this hammer will possess the power of Thor" therefore it doesn't need to be Thor. 
• Hulk ? No chance
• Black Widow is an unlikely option as there are too few women in the MCU as it is.
• Nick Fury is another I don't think they will attempt to kill as they have already done it once.
• Hawkeye  is a character who could go even though he is confirmed to be in Civil War. That might just be a stunt.
• There is no way they will kill Vision in his first appearance.
• Scarlet Witch and Quicksilver? Here we have I believe the most likely candidate. If I had to put money on someone I would go with Quicksilver as there has to be something to push Scarlet Witch to become an Avenger. Ultron slaughtering her brother would do that nicely.
• Iron Patriot -  I only have this as an option as if there was something that would motivate Tony Stark it would be his creation killing his best friend. Possibility ?