I have joined the forum mainly to reply to this post and to start offering some suggestions. I have been playing KSP for quite a while now and agree there should be some greater purpose for Space Stations and also ground based stations other than purely aesthetics, refuelling and a rendezvous point (which a tanker can provide). Science is the obvious point at this stage, perhaps attributing small science points over time depending on where the base is and how many kerbals are on it. It could also provide material to bring back to kerbal to obtain science. Additionally in future versions the use of contracts and monetary system could offer incentives to build space stations and ground stations but not necessarily to work them. This could be obtained unless additional funds were available for subsequent visits, supplies, additions and kerbal exchange. I think considering space stations, satellites and bases are common place by most users a definite purpose for a permanent space craft and/or stations should be defined with a purpose for longer term visits by kerbals (and reasons for multiple kerbals) to orbits and planet surfaces. At the moment science and cash is the obvious one when it is introduced, but additional repairs, automation and functions available only the kerbals would be great.