KSP is in my top five videogames of all time. I'd suspect it's similar for many of the other game's diehard fans. Like Civilization, it's a game that scratches a unique itch, and if you have that itch, it's irresistible. So I and many others are absolutely willing to pay more money for improvements and more content. I'd love to start with first class improved graphics built into the base game itself. I run some graphical improvement mods, but they don't work 100% of the time, they're always getting broken by patches to the base game, and they're somewhat unstable.