On Assassin's Creed 2, I was more annoyed with the whole Vault thing, and ironically it echoes how I felt about the other "Vault" I opened recently and that was the one on Pandora while i was playing Borderlands.
Honestly, I think I've just grown very tired with the whole "Open the Door, see what treasure's inside" plot device, because in a game where we've spent 20 or so hours working up to see what's inside this damn thing, getting ourselves killed over it, etc, it's just never going to live up to our imaginations. Frankly, I'd rather NOT know what's inside at this point. Would Pulp Fiction have been any less interesting if we'd seen what was inside the case that Jules had been carrying for his boss?