I'll say it now, Cayde-6 needs to die to bring some conviction back to the story and give the player some reason to fight. But, if we have to have the ghost talk for the guardians instead of them actually having a voice and true feelings for the loss I'm afraid it'll just feel empty and half baked.
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PLEEEEEASE Bungie do not cheapen Cayde's death by using our ghost to lament his death instead of our actual guardian.