I generally go to see comic-book movies with friends who read many comic books, so as someone who has read very few at all (and essentially no superhero ones), I often find myself with a different perspective than those sitting next to me when the credits roll.
I couldn’t tell, from the snatches I overheard, whether the consensus among said friends was that they liked it or disliked it. Personally, I liked it.
Having said that, its biggest flaw was its density. That clip you’ve seen in the trailers, of Juggernaut smashing through one wall after another at high speed, is a good metaphor for the script. Virtually every quibble I had (with one very spoiler-y exception; ask me about it in person) grew directly out of the speed with which the story slammed through its component parts. Some of that, I think, can be attributed to the shift in personnel between the second and third movies, and the concomitant shift in narrative focus. Had they continued on with the elements they’d set up in the first two films, I think they would have been fine;
conversely, had they been setting up the elements of this third film during the first two, again, I think they would have been fine. As it was, much of the material in the third movie was starting from a dead stop. Is it any wonder the acceleration required to get to the end was so extreme?
I really think I want there to be an extended edition on DVD. My opinion is that this was a good movie, but it could be better than good with the right insertions. More stuff with this character, more context for that decision, and some actual denoument — it would be interesting to see.