I like the fact that Bay (well the writers anyway) are killing off the good guys. I think it is actually refreshing for a movie, that pretty much everyone (except Prime and Bee) are not safe. What annoys me is when Transformers don't appear in the next movie with no explanation. Atleast AoE tried to address this by saying that the bots were being hunted and showed Ratchet and Leadfoot all meeting there ends.
I think the movie should be called Transformers Battle of the Repaints. Stinger is basically a clone of Bumblebee, Galvatrons vehicons were clones of each other.
The Human element did annoy me, but no where to the level of RoTF. I liked Mark as Cade, and found him a much better lead than Shia. The over protective Dad did get rather boring however it did make me laugh at the short shorts joke. Nicola was ok, but you can tell Bay was on a thigh gap mission as all shots of Nicola was mostly from behind.
Overall a very enjoyable movie that went to long. But I rate it as one of the best.
I would have loved more Dinobot action, but I think that we will see more in the next movies.