In the real solar system most planets have names originating from mostly the greek and roman mythology. The Kerbol system has some jokes I really like, and as to the planet is eatable. But I think a Kerbal mythology and some optional objectives or story line would do this game good. I think it's easy do-able from a mechanic perspective, but the actual story would not be so simple.
What about we ask the players for help about coming up with a good story?
Of course I think it should be optional to choose from when playing, and it's purpose is to give players of KSP not such a hard time with coming up with a objective in the game.
It's really weird that objectives are such a big part of many games, and ksp doesn't have any! (apart from career mode ofcourse, which is quite satisfying I admit).