Well, we all thought the Pyro was a crazy evil psychopath who liked to burn things and people, because he liked to see things burn. But now it seems he sees the world in a different way, which pretty much kills the previous point.
Also the Pyro-vision was just too long.
On the good points, it's good to see Valve didn't reveal his/her face, gender or anything that ruins the character's mystery. Also it's good to see even his (or her) teammates are afraid of him.
And big plus for some of the real world parts, mainly the town on fire, maybe going to make a gif of that.
Still i was more disappointed than pleased by the video, but still liked it and i think it was "barely good", and yes, not worth the hype.