Was the intro that sort of rotated around a 3D system map removed? If so, please bring it back!
That was the best one in my opinion. It sort of invoked a sense of how vast Sirius is and how everything that goes on there is interconnected. I feel like it really pulled you in to the game and would think it leaves a good first impression on new players as well.
On a side note, I find the Bretonia battle intro too tense to start the game from. I sometimes close the game and restart it just to get a different intro. The others have more of a Zen like feel with a bit of tension added in.