I'm not too angry about the shaders, it's ridiculous that it is 100% luck whether or not you get them. It'd be much better if there were things you actually had to do to earn shaders.
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Faction shaders must be earned by ranking factions, getting them is stil rng but you can't get them any other way.
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That is the God Damned Problem. RNG is a lazy way to make the game longer.