Remeber guys this is a demo. The full game will have much more and it will be more exciting. Here is what Lucasarts said about the demo.
The demo will feature the SPECIAL VERSION of the Tie Fighter Construction Facility level.
It will also feature very special powers and a special ending THAT WILL NOT BE FEATURED IN THE FULL GAME..
So the Tie Fighter Construction Faclility that we played on the demo is going to be completey different from the game. They built that just for the demo use only.