Of course, we haven't even mentioned the multiplayer yet and this is really WIC's trump card. Its novel approach means that players can drop in and out at any time, choosing to take one of four different roles available. The whole thing feels far more similar to a round of Battlefield than any other RTS. The guys at Massive have done a wonderful job of making games easy to get into (thanks to the Massgate system) and also of balancing the different roles, with each unit being vulnerable to certain attacks.
Unlike most online RTS titles, the reliance on teamwork here is huge. Playing with a disorganized team or setting out on your own will demonstrate this, as you'll quickly be decimated by a better-organized foe. Options such as the ability to tag areas of the map with support requests (paired with excellent VoIP support) allow organized teams to efficiently co-ordinate attacks and provide back-up to fellow team members, conferring a huge tactical advantage.