You make some great points about the movie. If you are a fan of the comics you know that Thanos does defeat the Avengers and kills most of them including the Hulk. This makes for a very interesting 3rd movie because they could go at it with Iron Man leading a new group of Heroes. But that would mean they would have to introduce the likes of Iron Fist, Luke Cage and the real elephant in the room WOLVERINE! All these characters are apart of The New Avengers, plus there is the another story line where the children of the mightiest heroes are groomed by Tony Stark and come back to reclaim the earth, by defeating Ultron once and for all setting up another epic battle with Thanos... Questions that must be asked, are the X-Men who played a huge role in the later Avenger comics be making an appearance in this movie and where is Spider Man in all this?.... Can't wait!!!