This is something I've wanted since the beginning of Destiny. It's so annoying that you can't swap weapons or armor while in the vault. I don't know how many times I think I'm gunna equip a different gun or armor piece and then it goes in the vault and then I have to go and grab it back out and then exit the vault, open my inventory again and then I can equip it and then I go right back in the vault because I wasn't done using it yet... But I just realized the left stick button isn't used for anything while in the vault and It would be a cool quality of life update to either make the left stick the button to store items in the vault and keep the normal equip button while not using the vault [A for xbox] the equip button or just make the left stick the new way to equip items while in the vault.