I'm not too likely to see much of the upcoming Transformers: Prime cartoon series, seeing as how I don't have cable.
I'm not the first person to make this comment, and surely won't be the last, but...
...please, please, Hasbro and cartoon designers, Optimus Prime is just better with a faceplate.
I'm not trying to be a geewunner, really (I'm one of the least likely people on the planet to do so), but the particular facial type that they're using for this version of Optimus just looks like a halfhearted, stupid compromise between a real mouth and a faceplate.
So I beg of you, GIVE HIM HIS FACE.