Well, I saw this with my kids yesterday and frankly, got what I expected and then some. This is a Michael Bay film. Period. Go in knowing that and leave satisfied. It's hard for me to be overly critical about a movie about transforming robots that includes a transforming fire breathing T. rex. I think the expectations are way too high but that's just me. Sure there are things that didn't make total sense but again...fire breathing T. rex. Wahlberg did a good job with what was there and Tucci was good and funny enough to keep a 12 and 9 year old in stitches even well after we got home. Someone commented about people doing Kung fu for no reason, well that was actually explained but not well developed. I use that to bring up Bingbing who as slight as her character was, she was memorable. I love the redesign of Prime as it makes him look more like a muscular superhero. Kelsey Grammar was excellent and though also under developed, Lockdown was frightening in a good way.
There is a whole lot to like about this movie IMO again, as long as you go in understanding it's a Bay film. The first is still the best overall because it's so relatable. AoE is better than Fallen and very close behind if not a tie to Moon depending on how you evaluate. Sonically...to semi quote Jaws...You're gonna need a bigger amp! I have never been to a movie where I felt it consistently in the seat. If the movie had been a half hour longer I would have needed a wet nap, lol.
Lower the over the top expectations, unplug your brain for a few hours and have fun with it. I wouldn't go out of my way to see it again but I would if the opportunity was presented with good reason. And it's an easy BD buy.
One last thought that occurred to me during the movie, Megan Fox has been the best female cast of all the movies IMO. The other two are kind of forgettable.