What is the perfect Win8 tablet?

For me it's the the Asus Transformer Book, with a Wacom digitizer and pen, built by Lenovo.

Full high performance laptop capabilities

Full tablet functionality

8+hrs of battery life when docked, 4-5 when not

Exceptional build quality

I am absolutely dumbfounded that at the very least, there aren't more announced devices like the Transformer Book.

I see no downsides to a device like this, but would love to hear why I'm crazy.