Lae'zel from the trailer looks like her old character concept, Gale went through some face morphs in EA. Sarth Baretha, from the githyanki patrol, was dark haired in EA and is blonde in the game. None of these changes have any meaning.
I think the emperor was planned to be Balduran, but not the dream person originally. Because if he were, there would not be so many inconsistencies in the main plot. Frankly, the later parts of the story are in need of both playtesting and editing, and point towards a rather hastily done rewrite.
