Use spare gigajoules to teleport shipments of items.
Mods introducing new content into the game.
Augmented or new ways of transporting materials - belts, inserters, pipes!
I suppose that you would have done it already if you could/wanted to, but I'm asking just in case. Have you considered making these rotatable? Given the position of the connections, it would be quite handy.
There was something weird with multiple-entity buildings and rotation, but I forget the details. Will poke around...
