Especially with the Dungeons in EotN, people are constantly running into inventory space problems. After the second level most people have a full inventory, forcing them to decide which items they want to leave behind or which items to salvage for materials they don't need.
Many people wanted that there are merchants added to explorable areas and dungeons, but that is a long-wided thing to realize.
My Idea is that a new item is added to the game: The Gold Salvage Kit.
It destroys an item not for materials but for a percentage of the gold value it would be worth when selling it to a trader. 80% seems to be a good amount here if the Salvage Kit itself has 100 uses and costs 300 gold.
That way, salvaging 100 items worth 50 gold this way would result in a net gain of 3.7k, while simply selling them to the trader would yield 5k.
This means that selling them to the trader is still the better thing to do, but if your inventory is full, at least you have an alternative to stuffing it full of materials you do not need (and reducing the gold gained even more).