Yeah, I definately think Ultron will play a major part in the second half of Volume 2. Maybe, at least I'm hoping, the evil of Ultron will be a lot more subtle than we have seen in the past, meaning he won't exactly go all out & kill thousands of people like the usual Man vs. Machine Skynet type of situation. I'm hoping for something a little more complex, more insidious, more like how the Robots take over in "I, Robot" the book. They basically come in thru the backdoor, no one seems to notice, and no one seems to care. Although, this being the Ults, I'de expect to see some resistance. Am I making any sense?