To go a bit meta here, I think we are talking about what direction the game's career mode is going to go in and what that means for people. I like lists so here are some possibilities. * The 'Buzz Aldrin's Race into Space'/Liftoff Model. Liftoff was a 1989 board game and BARIS was the PC version. It was a competitive game that took place using turns where players competed to land on the moon first. The economic model involved was part of the competitive nature of the game. *IF* KSP wanted to implement a competitive model, that would be interesting and fun for a lot of people, but would need to stand apart from the solo game. I have no desire to play a KSP/BARIS/Liftoff game against a computer opponent though. Not my idea of fun. * The 'mission campaign' model were a specific missions are generated randomly or given in a set order or some mix where a player is given a specific goal and some kind of reward for achieving it. Mission 1: Suborbital Flight: reward $1000. Something like that. Honestly, not that interesting to me, but I guess adding something like this as a more structured tutorial level for the early game might work well. * The Unlimited Cash, but we think you are cooler if you do it cheaper model. This could be some kind of achievement unlock model, where players can unlock (gods of Kerbin forgive me) badges for say landing on the moon with a craft under a certain weight or cost or both. This would require some er.... significant anti-cheating checking and would probably ignite the MechJeb flamewars to biblical proportions. But it might actually be fun if it's set up right.