Nobody understands the Comic-Con demo better than Marvel production chief Kevin Feige, who knows how to create material that will please these fans. In Hall H you can see that he gets it. He's giving them what they want. He's not shoving something down their throat with scads of advertising dollars, not wowing them with a great VFX trailer. He's bringing to life beloved characters who exist inside a well-considered consistent universe. So when Tom Hiddleston turns up in full Loki regalia and exhorts "the arena that is known as Hall H" to become his army--"where are your Avengers now?"--the crowd ate it up (see that video and all the panel videos below). (Hiddleston explains how he and Feige pulled off the surprise appearance to Hero Complex here.)
Feige introduced "Thor: The Dark World," which is in production now; so is the next "Captain America," starring Chris Evans, Samuel L. Jackson, Scarlett Johansson, Robert Redford, and Idris Elba-- in just one elevator scene clip, Captain America's place in our world became crystal clear. James Gunn's "Guardians of the Galaxy," starring a trimmed down Chris Pratt as Starlord, plus Zoe Saldana, Lee Pace, Djimon Hounsou, and Benicio del Toro, starts filming August 1-- and Glenn Close has been added to the cast.
And outside of Hall H, "Avengers" director Joss Whedon hosted Marvel's Agents of the SHIELD TV series. And in Hall H, he briefly introduced the new title for the "Avengers" sequel: "Age of Ultron." The crowd went nuts. Clearly, Marvel is in a good groove.