Do you think the entire Tony as adopted and Arno Stark story line was set up for this revisit Iron Man 2020?
I think it was designed to serve multiple purposes. One was to give Stark a living family to interact with, a Mycroft Holmes and an Aunt May. One was to give Stark a source of angst and doubt, in that now he had no lineage of greatness, and therefore had to prove himself worthy of the Stark name. And one reason was, yes, to set up Iron Man 2020, an Iron Man 2020 who would have a greater claim to the Stark name than himself.