Well, I see Nightstar being an Outsider, simply because she's trying to not get dragged into the public eye TOO much, or she could end up screwing up this universes timeline due to her nature as Dick and Kori's daughter. So, she'd be hesitant to join a public superhero team, where questions of her origin would be Public Domain and she'd be expected to answer them.<br/><br/>As for Orin? I dunno. He's more of a solo "I have a specific mission, and if your mission aligns with mine, brilliant." So I see him maybe floating between the to groups, depending on where his investigations take him. After all, he can teleport (after a fashion) so going between Metropolis and Gotham would be childs play.