It's an interesting idea, although I would say that most planets are oriented such that their poles are pretty much inline with the solar system's plane of the ecliptic, aren't they? There's some variation off that, but I didn't think a huge amount.
In this game you can already move the camera around and look at the planets from many different angles, but I suppose that basically just rotating their starting position so that their poles are a different orientation related to "up" out of the 2D battlefield would be possible.
This is a great one to throw in mantis for the polish phase. It wouldn't take long to do, but I'm trying to crank through stuff right now. I also do want to be accurate if possible to the science of these, although I may already be out of bounds on that.
And yes these are fully 3D.