I think there should be higher sensitivities in Destiny. I don't feel like 10 is high enough. Those are my thoughts, but besides that the game is amazing. It may be my new favorite shooter/game. I'll make a poll so you can all vote whether you think this should be implemented or not.
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Keep in mind some thing in the game is obviously slow, to encourage tactics over twitch reflexes. There might be gameplay reason it doesn't go faster.