I have an idea for something like this.

There are zones with their own dedicated inventory. Eureka and Bozja both have their own storage for skills and consumables. Island Sanctuary has it's own inventory as well.

So if we can't have a storage for materials under normal conditions - can't we have some sort of workshop instead? A special zone with it's own inventory which you can only access from inside that workshop, where you can store materials and can craft? Of course directly from that special inventory, so no need to transfer stuff back and forth all the time.