I wanted to suggest this to create a semi-unique experience each time you embark on a new Journey (begin a new universe). Features: Kerbin: "biomes" alike in other procedural terrain engines, could be an area that cultivates an expected result, such as mountains where mountains should be and desert plains wherever the game feels comfortable placing them. It wouldn't be heavy during the game as it would enter a pre-generation state, generating terrain for all celestial bodies +- Kerbol Craters: im a big fan of holes in the ground, but when their bowl shaped and great for driving around in, oh boy! My point is, is that celestial bodies that have craters would be alot more interesting if those same craters weren't there in a second career playthrough. Mapping: this feature would now have a legitimate purpose, as it would allow pilots to plan their next celestial vacation on the currently mapped body as well as perhaps science for such accomplishments. Mapped bodies should display number of unique biomes Science: oh yeah science... this will be a lot more non linear collection of important data and will give a more exploratory feeling to the well known system we love and perhaps more incentive to enjoy a terrain generated jewel. Also, to refer back to mapping, the science menu should catalog known biomes, visited biomes, and perhaps "discovered" biomes (feel free to use a less confusing word by all means); these biomes are not discovered through mapping but through close up analysis, kind of like sub-biomes where the terrain is slightly different, but not unexpectedly different from the biome in general and can be used to key in a extra 5 to 10% of science points. I hope you like the suggestion! feel free to add comments!