My bet is that the demo is also some sort of beta, so it has stuff, but not everything, so I highly doubt it's a full sandbox mode (That would mean the only thing left would be story mode tops)
Picture wise: I see a hospital... A... mine in the foreground? A tree... I take this is a colony on the habitable world (Was there one? They certainly didn't use farms) And are all colonies inside a crater like place? No planet to move freely around?
What else... cables? We have to lay the network ala redstone on minecraft? How about ducts between buildings for people to move around?
Also... hearts? Residences or breeding grounds?
An algae farm... a food court (Invader Zim happy face? You mean this?
What is that thing in the middle that Domino mentioned? (A BUILDING CRANE/LASER! XD) It has a vent like thingie... Looks like stuff falls from there and into the hole to turn it into something else...
Is it me, or the pic looks more cartoony than those before? Was there a change in graphics?
Research wise, Sins style? God no, that one sucked. I prefer those of GalCiv 2 or Distant Worlds.
God I want my computer so badly. MOVE IT YOU TURTLE SHIP!