Purchase more inventory slots, rows, bags, etc.
Sort inventory
Auto stack
Quick transfer between bank and inventory instead of clicking and dragging
Quick destroy.
#Inventory QoL improvements
cosmic ocean
tardy hollow
The inventory is the one thing mods have yet to fix.
somber reef
Would be a great gold sink to buy a few different inventory upgrades. (Good lord I can't type, had to edit that three times.)
fair knot
could be a great gold sink later on too, if it was designed in a way where every slot gets more and more expensive