In the first movie most of the Decepticons barely spoke at all and showed absolutely no signs of personality.. Sure, it was a pity that some of the neater Autobots got fewer lines in the second movie, but personally I enjoyed the fact that the Decepticons were given some personality in the second movie so that they weren't merely boring plot devices anymore.In fact, one of my gripes with the second movie (which I did enjoy) was that Ironhide got very little to do. I mean, he got like... 6 lines, and while they're cool to hear, they're short, and in the grand scheme of things, inconsequential. Ratchet got even less. Though I'm not his biggest fan, I'm sure those who are were dissapointed.
Oh, and you're going to find half naked girls and sex in a majority of action movies nowadays. I just don't let it phase me. Personally I really did not like the first movie, while the second one I wouldn't mind seeing again sometime when it's out on dvd.