True enough. Although the variants on sale probably all have doors on both sides, as evidenced by the two shots available. Too bad there are no aft views...
Leaving everything aft of the roof dome to engines makes this craft quite muscular, and thus superior to moving the one guy/gal and robot around in an ordinary shuttlecraft.
But the craft would still be powerful-looking enough if the entire centerline were dedicated to payload. The roof structure around the dome does seem to extend all the way to the stern along the centerline; it would make sense for this to be reflected in the interior. So there would be a shipping container's worth of habitation space there, probably. And you could decorate it with multiple levels, as supposedly there'd be some sort of a platform or ladder for reaching the top dome at least.