Yes, the Avengers Age of Ultron is a dream come true. This is exactly the sequel to a great film that we have been dreaming about. It's superb on every single level. It honestly has no real flaws that I could see. How great does a movie have to be given the inherent difficulties in making a film like this in the first place? Writer/director Joss Whedon did an admirable job of balancing the screen time of the sprawling and expanding cast.
As for the new characters, I loved what they did with The Vision and how they did it. The Scarlet Witch and Quicksilver — aka, Pietro and Wanda Maximoff are amazing as well. Wanda's psychic powers are much more complicated and empathetic then I expected them to be. What I love about Wanda is that she physically goes through emotional trauma when she uses certain powers and we as the audience go with her on that emotional journey. Like just about everything this film, that really packs a punch.
Marvel's done a great of making its superhero movies about the title characters more than the villains. In both team films now, the bad guy has stepped up and been phenomenal. Both films delivered true treats. This movie actually tops the first in scope and drama and that's in no small part to a superb villain. I feel that Ultron tops any bad guy since Darth Vader himself. His presence, manipulation and motivation leads to the best action sequences ever put to film. It also leads to an intriguing story and remarkable performances as this fine cast is allowed to flex their emotional muscles as well as their superhero muscles.
I can say without hesitation that movies just don't get better than this one sequel or otherwise.