I loved the idea that one Avenger had a secret, and that it was that he was a normal guy who is genuinely connected to the world in a way no other avenger is. We cut a lot of the misdirection that would have made the reveal more fun, but emotionally and thematically it still works great for me.
Well, it does have a basis, the family were in the Ultimate comics. (Where they were immediately killed. Thankfully that didn’t happen here.)