Hyperspeed
I think the coolest aspect of the Star Wars universe is hyperspeed. I can remember going to see Star Wars when I was like 6 or 7 and thinking it was so awesome when the Millenium Falcon jumped to hyperspace. In all the subsequent films I always love it when they make the jump to hyperspace. Such a fun idea being able to travel anywhere in the universe in a relatively short period of time. Even the smallest of ships can have a hyperdrive, like Amidala's silver cruisers in the prequels (loved the sound her cruiser made when it flew into Coruscant... before it got blown up). I do love all the new (or should I say old) ships we will be getting for SWTOR as well, but they aren't as slick as those Naboo cruisers. Oh well, looking forward to flying with you all in the near future!