Come on now, the title age of extinction clearly referred to the extinction of the dinosaurs. Which happened in the first five minutes admittedly but it's mildly relevant. Maybe Gladys Knight will walk past in the background in this one. I guess Transformers: I'm Not A Paedophile Honest, I Have a Card That Says So wouldn't fit on billboards (I'm not entirely sure now anything else happened in that one).
I'm oddly happy about this for no readily apparent reason. I'm sure he won't be doing much but it has felt most of the rank and file Decepticons have been a bit bland in the last few films so having one who made a strong impression in the first film and I suspect is well remembered by more casual viewers (not in the "Ah, that's the character Barricade" sense but "Oh yeah, the cop car one, that was cool" way) is appealing.
Happy that Duhamel is back to be honest. Out of all the Good Guy Humans, I felt he got the balance of the tone of movie best. Also would agree with Barricade being a good decepticon character as such. In fact, any carry over from the first film is a plus for me.