Even the raid gear isn't really earned, it's random. I've completed normal twice, and the lowest levels who did little aside from slow the group down got the best items every time, while the ones who did the most got nothing but ascendants, ships and class items that can't even be broken down into shards.
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Yes its random in the vault but you can only get it in the vault any mmo will have a random factor that is how the games work. If all you had to do was run through the game and then you get to choose a piece of armor everyone would be level 30 and it wouldn't be as hard or as much as a achievement as it is.
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The final boss should never give trash like a shader or a ship or three shards. A sparrow? Fine. At least it's something you can use. You should never get a class item that can't even be broken down into shards from a chest that other players are getting exotics from. At the very least these class items should break down into more shards than a normal piece of armor. Cosmetic/useless items/ascendants are not adequate boss drops.