People have been clamoring for more bank storage for a while now. Since we only seem to get shared bank upgrades, I assume there is a coding problem with expanding the main bank. If so, would it be possible to just add different bags? Maybe bags that will only hold weapons, armor or jewelery. You can make the bags weigh so much that you couldn't move when you add them to your inventory at the bank. Could make them drop in the new raid - a token you turn in that spawns them in your bank. Maybe even upgrades to make them lighter so you can carry them with you.