I know this may be a while off, it's just a suggestion for the future of landers, or for when customizable rockets/landers are added. I'm also sorry for the short suggestion. To efficiently land on a celestial body without an atmosphere, your lander should be equipped with gear more suited for this, such as a harpoon and shock absorber, or just change the lander if custom rockets aren't added yet. I don't see landing on a large celestial body, such as a planet or natural satellite to be a problem, but if asteroids, meteors, and comets were added, then it could prove to be useful. Without these, you would be able to miss your target, and hit somewhere else, or fly off in to space. Thus, causing a serious issue. Without the proper landing gears, it could just disable travelling there. Whether cosmetic, or as an actual need, it would be interesting to see this added.