I also thought of that when I watched the film. I felt like it really reflected the disconnect between Tony and Howard. Sure, we've only really heard Tony speak about his father dismissively, but this time we were able to see it.
last one = spot on. I offer a fourth: 1. Tony stark (or more specific Robert Downey jr.) 2. Hawkeye 3. Loki 4. The entire male cast 5. Scarlett (because cmon: that fight scene she had at the start was pretty bada**)