The DLCs have come out every few month but this is the first time the guns will be left behind, in TDB the vanilla guns were left at 300 attack but they were still effective and in HOW we got etheric light. You are acting like every DLC we have had to dismantle our guns, i'm pretty sure that every year this will happen. We will use our guns for a year, then wipe and start over again for year 3. It makes perfect sense to do it this way. it keeps the game fresh and gives us a reason to grind. They can't always keep giving us better weapons as that makes the game easier and easier, if they fix the vault issue then i think most of the complainers would be happy.