I would kind of like the idea of being able to choose a starting setup. With say something like: Dawn of flight Orbital Division Mün Inquisition Inter planetary exploration With each level determining your starting point in the tech tree as well as the level of exploration already completed So, if you were to start with Interplanetary exploration then the local system (Kerbin, Mün, Minimus) will be marked as explored and thus forcing you to actually go out and explore the rest. On the flip side, starting with the dawn of flight will give you only basic airplane parts but the whole of Kerbin to explore and start advancing on the tech tree.