I would gladly pay for the expansion if I knew I could keep and ascend my old gear and have more vault space, and pay for concurrent expansions after that, who cares how much I play as long as they get me to pay for it? One of my reason I play and a lot of others play is to collect the weapons, I played skyrim to collect shit and that's why they had all the weapon walls and plaques, Bungie doesn't get that, give us a weapons room then we can leave our old gear at least even if it becomes obsolete.