Currently, there is no add-ons for either the default Atlantis that comes with 2D panels. The default Atlantis does
have an semi-functional Virtual Cockpit, but there's no system simulations or anything. All you can do is look around.
Nothing is clickable. And David413 one of the authors of the Space Shuttle fleet add-ons, have said that he has no
intentions of creating any complex panels for the fleet.