A game like this has allways the potetial to do something more, and fortunately there are many modders with that thing in mind. I think this game can develop much more 2 aspects that are pretty abandoned right now, and wouldnt change at all its sandbox spirit: 1: Exploration. We spend a lot of time building the rockets and piloting them, just to land somewhere, plant a flag, pick a rock, and go back. There should be awesome structures, natural or alienesque, worth putting some efford into exploration. These things could be detected from an orbit, via satellite antennae, or even better, telescopes. That would encourage the use of rovers and planes, and would be a good reason to justify the travel. There could be also lost vessels in weird orbits, from an ancient civilization, that could give you new overpowered or funny parts. It is evident that people use badges to show their achievements in the forums. Why there are not any achievements in the game? That would encourage people to visit all the planets, which is the most evident goal of the game. 2: Do things that are not supposed to be done. A part of Minecraft´s success is the extreme flexibility of its engine, that makes possible to make anything you can imagin (via mods and plugins). I know this is no MC, theres no place for redstone here, but there are some cool mods like KAS or Infernal Robotics that can make that step beyond. The problem is that right now the game is not flexible enough to develop all these mod´s potential. There are challenges in the forums like "build a catapult", or people trying to make circuits to race with rovers... think in all that kind of things. I´d like to make a stupid rocket powered machine that end up throwing a kerbal far away. I´d like to race a "Paris Dakar" in Duna with other people. I´d like to build a useless transformer truck that vomits fire... and working a bit on the land maneuverability of the Kerman family could make possible to introduce a bit of platforming, or even some action (Jeb with a gun fighting creepers on Laythe? Shut up and take my money!)