This is kind of wishful thinking, but I hope they would overhaul the race system somewhat to reflect the split between genuine Void Elves and their 1 questline worth of lore, and the high elves. Like this:
This could justify giving new classes to High Elves like Paladins, as well as the potential for new voice acting and no void visual. Although I admit it would be difficult thinking of what would happen to racials in this scenario.