Could we get an in-game lore book? Or maybe a library in the city where we can look things up?
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If you investigate the window on the balcony just past the bridge after banshee 44, the ghost talks about the private chambers for the speaker. The new speaker will most likely will be our own personal catalog for all the lore in the entire game. It's a hard job as you know, to know everything about destiny and "speak" it. So having an NPC with a million and a half dialogues, is going to take a while to make.