Loot Highlight is a bright light that stays on the creature if it has dropped any loot. This serves as a visual reference to know which creatures you may have forgotten to take the loot. There is an option to disable this if you want.
Bosstiary Tracker is a way to create a personalized list of bosses that you are killed frequently and also know which ones are available to be faced again.
Managed Container Extension is a setting for Npc Merchants or Stash. With this for example you can buy portions and runnas from an Npc and they will go to a specific backpack of your choice. For Stash, the redemption of items would also go to the places that were predetermined.