At the start of this Destiny year, The last wish got added to have craftable weapons. It now feels as though the remaining two raids "Garden of Salvation" & "Vault of Glass." need to have the same love applied to them.
Whilst for most Garden of salvation is not as enjoyable of a raid as others such as Last Wish. (i personally love it) it would give people the injection to go back into the raid and farm for new rolls and try new combinations.
Again for Vault of glass this would also add to something else people to collection whilst they are farming for Vex.
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I see them updating VOG's weapons before GOS's. GOS isn't as popular as VOG, and popularity is one of the bigger driving forces in Bungie's decision making. Which is a bummer because I honestly feel like GOS has a lot of underappreciated weapons in it's loot pool. Like Sacred Provenance and Reckless Oracle.