I agree with everything except for the last two the current classes are good enough and they can do the role you just mentioned remember it is the beta not the full game
Also the option to trade was already stated which would you rather say to a friend when you show them the exotic weapon that you got it from some guy or that you beat the final boss of the hardest raid in game on the hardest difficulty
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Well this is through the app with Bungie launched with the Beta Release. You can get the app itself through the Google Play Store or the Apple App Store. But it's only good for reviewing your forums, your items, your character, and your friends list.