I just got back. It sucked. I haven't read the thread yet, so these items have probably been mentioned, but here are some of my biggest issues:
1. The bad guys just gave up at the end. Early in the movie they have no problem shooting things up and trying to kill the two main characters, but then at the end, when they could have easily just pulled out a gun at shot the girl, they just say, "Oh, well" and turn and walk away.
2. The bad guys are the laziest bunch of henchmen I think I've ever seen. At one point, the good guys literally hide behind a rock and no one looks for them. At the end, the girl friend runs through their lines and one lady kind of half reaches out for her, and then basically says, "Meh. I tried."
3. Why could the main bad guy touch the magic alien stick and no one else could? They never explain that.
4. There's no way the news drops a story on WW3 because some random people show up at a mid-tier news station with unverified video of what they claim in aliens. That stuff is all over the internet now, and the news isn't reporting on it. Maybe if they showed the alien first, but they didn't.
5. I feel like North Korea would have used that moment to launch their nukes against the US. I doubt they would have cared about the new footage.
Anyways, it really felt to me that Spielberg mailed it in on this one. Even the alien looked pretty bad.