Isn't Leonardo just a temporary cargo crate?
I thought the Leonardo module was just a big cargo crate. It fits in the shuttle, and it can connect to a separate port on the ISS, making cargo transfer easier. Before the shuttle leaves, Leonardo is loaded up with unwanteds and stuffed back in the shuttle cargo bay.
So it's not directly used to support ISS crew expansion, but more indirectly. The additional toilet, galley, sleeping racks, and exercise equipment would have been brought up in Leonardo for transfer to modules that were already up there.
Alien icon cuz you can't really entertain visitors out there with only one toilet, now can you?