Why can't we store Upgrade Modules and other items that we grind for? What possible reason could there be to prevent us from saving up resources that we earned so that we can upgrade our characters when we want to? I had 10k Baryon Boughs in my vault but couldn't put 25 Upgrade modules in there? I know that the Postmaster isn't for long term storage and that I took my chances holding UM's there but it is what it is and I lost them. It's still irritating! Can someone explain a real, rational reason why we can't store these things? A reason that makes sense? I've been a hardcore Destiny player since the beginning of D1, but even I'm starting to throw my hands up with all the nonsense.