Greetings.
I'm fresh in after watching the gameplay video, and reading around a bit here - and digesting it for a couple of days for good measure.
I'd like to share my impressions with you all, as probably everyone else does, since there's precious little else to do with this game as of yet.
First off, what I liked:
The scale. The sheer scale and the level of detail, with seemingly free curves, angles and block sizes, which leaves me to believe it's possible to build near-perfectly detailed smooth-surfaces, as opposed to what any other building game allows the player: