shinkan
Like a dummy object, but I would add the ability to import an object at runtime.
Maybe not dummy but more like a component.
As for the import at runtime... Yeah. It depends of the C3 workflow (?) really, and I can think of only two possibilities:
1. You could make components made of previously defined objects - in this case this would be like a container, that holds included objects - So you can add to layout just the plain sprites or components (sprite1+sprite2+tiled background for example)
2. Component is just an empty name/place/thing and everything you want to add to the layout is made of whats inside of current component. You can't add a plain sprite to the scene, because by itself it's doing nothing. But instead you need to add a component - which contains: sprite, collision, behavior - and this makes an object complete and ready to use
Either way if that kind of control be possible in C3 than "wow".