1-I always thought it was interesting that in the sword of Crota mission the ghost reminds you that the sword is powered by dark energy. And yet it speeds your super charge speed considerably. If your powers are a gift of the traveler, to me that means the "darkness" of Crota and the power of the traveler is not all too different. 2-Also there's a mission on the moon where you fight the hive and when you win the hive were using the traveler's shard. I don't think good and evil is as obvious as black and white. I see the labeling of darkness and light ratings as something like war propoganda. 3-What groups/sides are there? There's traveler, the queen, the fallen, the hive, and the stranger who seems like kindve an underground movement. I know there's a grimoire card talking about a certain number of armies and how to defeat a coming threat. Two will have to work together, it's the ramblings of someone but I don't personally have this card. If someone could quote it that'd really help. I think it hints at what each side is about.