-The comedy aspects that were annoying in the previous one (and I liked the previous one) are pushed to their obnoxious extremes. Devastator's wrecking ball testicles! Sam & Max's Parents! (more on them in a moment) Skids and Mudflap! (ditto) Racial stereotypes pushed to the nth degree! Dogs humping! Robots humping things! John Tutorro's ass! Please kill me.
-The parents. While they were kept to a minimum in the previous one, here they get more screen time, and it's terrible. The bit with the mom eating a pot brownie is atrocious.
-Skids and Mudflap. Now I don't mean to sound like some kind of holier than though moral avenger or what not, but I know a minstrel show when I see it. They
-Have gold teeth.
-Are illiterate
-Have big ears
-Speak ebonics
-Are dumb
-Have ape like movements
I'm amazed they didn't start talking about watermelon and fried chicken while singing mammy. A black woman a few seats away from me looked like she was about to cry when they showed up. Also, you have all these other Autobots and Decepticons that you know and love from the past, yet they get less screen time than these two.
-Also, there is once again more attention paid to the US Army than the Autobots in this one. We get it Mike, you love the armed forces! At times you wonder why it's called "Transformers"
-The Fallen. He's hyped as this unstoppable, almost Lovecraftian evil force, and he's defeated too soon and too easily. Also, there's not enough of him, and it's a perfectly good waste of Tony ("Candyman") Todd.
-Poor John Tutorro. I know he'll get paid a healthy sum for this, but I still felt bad for him. The man is one of my favorite living actors, and he deserves better than this.
-Don't give me that "Of course it's dumb! Just turn off your mind!" Here's the thing: There's a difference between dumb but fun and insultingly dumb, and this was the latter. Believe me, I tried turning my mind off for this, and eventually it became so bad I felt angry. Angry at the screen writers. Angry at the fact that they thought so much of this was funny when it was just terrible. Angry at Michael Bay for doing this whole thing. And most of all, angry at my self for paying to watch this.
-The whole thing mostly doesn't seem like it was done for the general movie going public. It basically feels like it was made to entertain one person-Michael Bay. This just feels like a love letter he did for himself. It's nothing but him stroking his ego and screaming "Are you entertained!?!?!!" for nearly two and a half hours.