"In the stills with this blog, I have traced the history of Starscream® from its origin as a children's toy through its evolution in TV animation (1984) and the 2007 movie. It has grown steadily more complex, apparently feeding on larger and larger junk yards. Starscream® is now too much to comprehend, especially in Bay's typical average shot length of not much over one second."
And it's true. I find the movie Transformers ugly and overly-complicated in design next to their earlier counterparts. I don't mind highly detailed robots, but there should be a style to that detail.
Sometimes less is more, and so-called "realism" less of a virtue.
As an aside, Ebert points out that the designer of the original Starscream was from his home town.