The Avengers: Age of Ultron theory

This isn't going to be one great big editorial. I'm just going to add this to the theory I had a couple weeks before comic-con. Now, as we all know. The next Avengers film is, The Avengers: Age of Ultron. Part of my theory was that Ultron is the villain, I was obviously correct. I did get the Ant-Man part wrong. But, I think that I have figured out Ultron's creator in Age of Ultron. But, let's cut to the chase shall we?

My initial theory is that Ultron would be the villain and that it would have Ant-Man and Vision in it. I was wrong about Ant-Man but Vision still has a chance. It's also a global film and with Ultron as the villain, not only is it a naturally darker movie but it also opens up for a possible Black Panther appearance. Yes, I still think Black Panther will be in the film cause it all makes sense. Quicksilver and Scarlet Witch will obviously play a part in it, my guess is it has something to do with the big guys up in space. Yes, I am suggesting either Thanos or The Other will be involved with how Scarlet Witch and Quicksilver get their powers. That being said, my latest theory is this.... Tony Stark will NOT be Ultron's creator. But, S.H.I.E.L.D will play a part in it. Captain America: The Winter Soldier is the film that has the closest ties and will carry us into, The Avengers: Age of Ultron. Recently, Kevin Fiege said that Bruce Banner will play a significant role in Age of Ultron. Do you see where I am getting at with this? To add more layers, angst and darkness into the character of Bruce Banner, I believe that Bruce Banner a.k.a The Hulk will be the creator of one of The Avengers greatest and deadliest enemies, Ultron. S.H.I.E.L.D will ask Banner to make an Iron Man like robot/armor seeing as how Tony Stark is done (more-less although still technically Iron Man) and obviously it goes haywire and there ya have it, Ultron.

As I said, it wasn't going to be a big editorial but I wanted to get this out there. What are your guys' thoughts? Bruce Banner instead of Tony Stark as Ultrons creator? Comment below with your thoughts and theories.