Well it's a matter of opinion I suppose but personally I'd put planet surface waypoints in the 'important but not urgent' category. An orrery is just a nice to have ie neither particularly important nor urgent. I appreciate that you consider an orrery more important that I do, but do you consider it more important than planet surface waypoints? If it were up to you, which of these two features would you ask to be implemented first?
Now that is a tough choice. But I would probably go to the orrey map as I would probably use it everyday. Planetary waypoints would be every so often. But it all depends on the gameplay that gets implements with planetary waypoints and an orrey map. They both have a huge amount of potential for good gameplay. But if it is as of right now, then it would an orrey map.