Spellbound
Terrarian
Pretty straightforward. Having to place a block at the end of a chain to hang a light source at the end really doesn't work indoors. I suppose some adjustments would have to be made for outdoors swaying lanterns (do chains/ropes sway with the lantern or just the lantern sways? Swaying ropes would have to be animated, though, so perhaps not that) but overall gaining the ability to attach lanterns/chandeliers/etc would be great for building.