I3B is an excellent example of a nuanced alternate mission - if you fail to destroy all of the enemy ships in 3, you're assigned to take out the rest in 3B (which are now threatening the Midway directly). While it's unlikely a future design could ever have as much variation as the original Wing Commander (with many more 'losing' missions than winning ones), missions like I3B are a great way to include that concept in a more modern/expensive game.
These updates are thanks to John "Captain Johnny" Guentzel, who provided several CD image archives of material used by the Wing Commander Prophecy development team!
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Date: March 26, 1997