Would be great to filter the items you automatically looted while farming/killing mobs. I.e, you only need the weapons from the pirates in NH, you won't get the ores/cloths/leathers nor potions.
Crafting Items [ON] / [OFF] (includes all of the crafting and reinforcing items such as gems and magic powders, rough diamonds and the feather wings etc.)
Armors [ON] / [OFF] (all armor pieces as well as shields and belts)
Potions [ON] / [OFF] (potions/candies/foods)
Weapons [ON] / [OFF] (all weapons)
Accessories [ON] / [OFF] (all accessories, wings and trinkets)
Miscellaneous [ON] / [OFF] (costumes, head accessories and glasses)
Something like that.. if you wish to turn off the selected filter, you won't be able to loot any of the item included in that filter.