The erratic way the characters behave is still a weak point. One smart sentence after the other (grown-up conversation) and then stupid things in the next. Hopper going from understanding to obnoxious from one scene to the other, listening in one and stubborn in the next, smart in one and then stupid. Characters and dialogue are too black and white, I think that's the series' weakest point.

SPOILERS!

The writing does get kind of lazy. Taking kids as the main characters so you can let them do dumb things? How old is that? But not just the kids, more characters were irrational. Building up to the last scene where time is of the essence, and a dad has time to give a dad talk to his son (moral over story, is this Disney?), people stand watching with guns but don't do anything but shout, and everything is saved at the very last second. That was just cheap, lazy writing. I really liked the show exept a few of such moments, but the last half of the last episode they seemed to all come together.

Well that was a waste of time! Superficial writing without any sense of story, cliche in characters, cliche interaction, completely unbelievable in every aspect.

Watch if you want "yeah! America is great! brainless heros!" without a storyline or character development.

I think S06E09 was the best of the season (and I have to say S06 was not the best season), but this was still a fitting finale.