How about putting the 'Erebor' prologue later, giving Throin a badass mystique until his backstory is revealed by Balin.
Or whichever dwarf was the oldest, names escape me right now. The VO does sound like Ian holm, but maybe there's a way. Also, am I the only font nazi who hated the subtitle font? Too large and rounded... Also unneeded whenever the orcs spoke.
Maybe there will be a version clean of hard coded subs