Mission structure is easy to understand, but is also a nice variety of mission types. However, I did find a few things annoying. In once particular mission where you have to fly the Milennium Falcon, there are about 12 fighters gunning for you at all times. This is all fine and good, but you need to dock with an asteroid base before the 12 other fighters attacking it succeed. I like to see challenge, but not so much distraction from snub fighters that it makes completing the mission goals nearly impossible.
Storyline is great.
Although you do destroy one in this campaign, you don't see 10 missions dedicated to preparing for that one assault. Check it out in our message forum . People who have already downloaded the existing file need NOT feel they should get this, as the changes are minor. But 2 of the missions have been made a tad tougher. Saw your post for Seth on Xwingalliance.net.