I was excited about the whole thing for about 5 minutes until I watched the video. This isn't an expansion.... it is more like a bigger update that added a few maps for 12vs12 pvp space combat. This "expansion" is basically using the same format as current space battles and the only difference seems to be that you can freely move your ship.
my major dissapointments:
1. Space combat still looks like an arcade game.
2. we probably won't have the ability to explore space, like in Star Wars Galaxies.
3. we probably won't be able to invite friends on board so they can man some turrets (like in Star Wars Galaxies).
4. few ships available. I see they have a good selection of one-man fighters but I don't see anything "big".
5. we still can't decorate the inside of our ships.
I mean, I remember that in galaxies we could even buy a space yatch and invite friends to hang out in the lobby of the luxurious ship. Amazing how a game that died is still way better in space combat than SWTOR.