QoL: Preserve item hotkeys for active items upon completion
Items with an active should retain their respective item slot (and thus their hotkey) while upgrading, i.e. when I upgrade my bilgewater cutlass in the 6th slot, my blade of the ruined king that I just built should appear in the 6th slot as well.
It's really sad to lose a close fight and then notice that your Bork didn't go off because it randomly switched places when you upgraded it.