This was mentioned a couple of pages ago, so I'm a little late to the train, but yeah I kinda feel underwhelmed by the latest inferno. It's a good job overall but there's a lot of things that kind of hamper it. Compositionally it's a lot weaker than train and nuke. But in valve's defense they had a larger buffer between and after those maps. Inferno had a smaller turn around time I think.
A lot of additional things that were omitted like phong also really surprise me, especially after including shader support for that on world surfaces. Inferno would REALLY do well with specular on a lot of those sculpted floor normal maps. I also really digged the hand paint spread they did for the main update page unveiling inferno, I would have liked to see inferno with a warmer atmosphere and color palette.