I would like to see a new crafting bench added in the form of a repair bench. Placing items in it should let them be repaired at reduced costs, and it should let you repair even things that would not normally be repairable.
If the item is something you normally couldn’t repair (you don’t have the knowledge or it is a special armor drop), you should still be able to repair it but only to 50% to 75% durability. This would be balanced since you wouldn’t be able to repair them to full, and you would not be able to easily repair them in the field.
It would also make it more fun and worth while to raid higher leveled NPC camps as a lower leveled character since the anything you found, such as weapons, would not be useless just a short while later.