Teleport items from planet to planet, as long as you can spare the electricity.
Mods introducing new content into the game.
Augmented or new ways of transporting materials - belts, inserters, pipes!
Would it be possible to have the Link ID be something you can parametrize in blueprints? I've no idea if there's an API that would let you do that, but that would be REALLY cool!
Unfortunately I don't know much about parameterized blueprints so I don't know either.
Ok! Was worth asking XD