A great stand alone expansion pack for a great game
About the new guy the Seraphim. It is quite unbalanced and if you don't get it. Try to be a noob and play in Skirmish mode set AI to Easy and choose Seraphim as opponent. You will die in around 30mins(Try to be a noob not a pro).
The graphic is still just good, at this time, you will only need a 700->800$ PC(If chosen carefully) to run it in full extent(Which is my PC's case. Using 1GB GTS250). And performance? You can actually put it in highest detail and still it's over 30fps.
So that's about it. 1 point for unbalancing and many great features(Like physics) are still doing their job. Waiting for Sup Com 2 :D