Jundroo Flight Program: Pretty much exactly like SimplePlanes, but with improved gravity and velocity physics, and orbital mechanics to escape our atmosphere and leap into space with rocket engines, both liquid and solid fuel, hybrid jet-liquid fuel rocket engines, Ion engines, batteries and solar panels, docking systems... The possibilities are now extremely more broad... Not many changes would have to be made to SimplePlanes for this to be a reality, it allready has almost everything needed for this to happen. Mods would work the same way, and perhaps the .XML files would still work for this to happen, meaning all the designs allready on the website could be downloaded and run in this new game... No overhaul required, just an upgrade, and this could be the game that people around the world have been waiting for.