Well, the orign characters ARE already getting the full voice treatment regardless - precisely because who they are is already strongly defined and well determined. This is why they are perfect as companions... but not as playable characters directly.
Now we don't know how many Origin characters there will be at release, but what IF, and assuming they all receive voice lines for everything the player could pick, we could also have the option to select their voice bank (possibly removing said Origin character from the game in the process to avoid weird overlap)?
