I want to have a weapon loadout for every soul for every element, but I want to keep the list compact enough that I can find the right weapon at a glance and swap souls quickly. A sword, lance or staff, and a glaive would cover almost everyone, plus I don't think I can get away from the necessity for guns, so all that would take a minimum of 24 slots. The first 8 slots would be occupied at least in part with statsticks, possibly taking all that space for a total of 32. If I managed my weapon upgrades from gifts they wouldn't need any permanent inventory space. That would leave 18 slots for incoming loot and extra weapons I haven't come to any decisions on. That last category is probably what will pressure the need for more space.