What was your problem with the story? It might not have been as epic as the ME saga but it certainly had as much going on as one of the planetary campaigns. I liked most of the characters involved with it, it did a good job filling in the background of the setting and I liked the little mini-stories you get talking to people around the fort.
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Actually it would be handy if you sat down and explained what you meant by a "meaningful" story, or at least gave us some examples so we can try to puzzle out what you're getting at.