Of course, I would love to have a few more planets, moons, comets etc to visit. And I´m guessing the devs would love that, too. I mean, it would be awesome obviously. So they must have good reason/s to not implement them now. Pure speculation, but it would be nonsense to create new bodys, if you´re planning to change/improve the appearance or the groundwork, which celestial bodys are based upon. I personally would kiss the feet of that guy, who puts an saturnish planet into the stock game. And at least one moon around it (just imagine the view of an ascending "saturn"! sigh). But IMO it really should have rings around it. Or maybe just one ring. Even a simple one. I´m surely not a programmer, so I don´t know how that would be done best. Some sort of a ring shaped volumetric cloud with groundscatter (better ringscatter) in it would be more than fine by me. Maybe parts of your ship explode when you fly through it, to simulate impacts, but that´s just dreamstuff by now, because we´re not even having clouds yet. I can´t think of any reasons why they would say "we don´t want more planets!", but quite some reasons why they say "not right now, there are other priorities first". If it can be done properly, I bet they´ll do it at some point.