This is ridiculous and you must know it. I have every single gun you listed, anywhere between 2-5 of over a third of them (maybe over half). You don't put all of your weapons in the vault do you? Each of my guardians has their own weapons and armour, they're all completely filled with enough that I never need to swap over for anything. My vault is full because of the weapons I want to keep but don't use. Like half of the exotics and the old vog gear. Plus the odd legendary and ib weapons. All being help for nerfs/buffs and for my compulsion to collect them all. 16 more spots will more than cover the issue and will cover new content as well. TL;DR - Your reasoning is moronic, nobody puts every gun in their vault... You're capable of holding 27 of each type of weapon between your guardians so holding 40 weapons between those 81 slots shouldn't be a problem! If you have 42+ weapons you need to put in your vault, which weapons do you plan on using to play with?