Re: The Design & Origin of ULTRON
I think the whole thing where Tony gets away from wearing the IM suit in IM3 is a huge plot line in A2. Tony has advanced the AI and independence of Jarvis & the armors from him so much that it will play a role in spawning Ultron. I'm not talking an exact Terminator/Skynet story but something with similar themes. In the end, he learns he has to wear the armor or something like that.
Of course, I could be completely talking out of my ass.