I think it would be a good idea to bring more focus on the Aircraft Hanger. Manufacturing and testing horizontally launched craft, space capable or not is an important part of discovering the world around us as well as beyond us. Maybe something like Atmospheric testing, Faster than Sound testing or even mock photography of some sort. Jeff Lovins Edit: I just thought of another idea relative to this. If adding additional science modules for spaceplane use isn't a viable options then maybe an incentive for playing career mode with the SPH is to add science at certain time intrevals or events such as Landing safely.