User objects with several nodes

I think it would be useful if one user object could hold several nodes. Just like
Brickbox plugin

So when you drop the user object onto the canvas you get a mini network already hooked up? Or should the multiple objects inside the user object be abstracted like in a cluster?

Initial idea - a mini network; A user object would store groups as well.
But “Meta groups” like shown on picture here would be useful too: