Add a buildable, around the same size (and same input?) as the conveyer merges.
How it will work:
Any items that enter it via conveyer belt will be permanently delete.
How is it useful:
Most people like to build sorting systems which make it easier to locate your items when they are organised, but with the current way to sort your items they get backed up if a container fills up, then you have to either manually free up space or you add another container.
