I couldn't get D&D type fantasy out of my head with Call to Arms. With Galen as the Game Master and Dureena as the thief and Tony Todd as the paladin and so on. Anyway I found it, well. There are worse Bab 5 movies and I guess Crusade could have had a worse prologue then that. The thing is, Minbar played a larger role in the war. I think that would have made more sense then Earth. The obvious motive is the same reason that Earth always seems to be threatened by villains on Star Trek also - the only planet we really care about is the one planet we actually live on.