Arelith was kind of cool for that reason alone. You could make, say, paintings via signs, just for example, and decorate your player-owned guildhouse or house with swag. Of course, for every cool placeable that was player-made, you had twenty blank signs, and sixty placeables no one ever bothered to make cool things for.
I would like more placeables that you can at least buy and put down, like the candles and birdcages. Sittable chairs you can just grab, carry about (albeit under encumbrance), and use on the ground would be nice, for instance.