Interesting idea. This would pair well with the other "realism" mods like remotetech, FAR, DR, etc. This makes reusable craft like SSTOs and mods like Kethane even more powerful. Any plans for reducing future build time of ships that are partially recovered, if possible? My thoughts are like the Shuttle program, where the ship is only partially recovered (the launcher isn't reusable, well at least not all of it) but as a result the time between launches is still reduced. I'm gonna have to give this a try tomorrow. As for the launch simulations, would those let you launch the craft as the game is now, but not let you save? So it's like when you quickload when something goes wrong and call it a "simulation"? Would there be restrictions on the amount of time a simulation could last, or it lasts as long as you like but without having any real effect? I can imagine that the clock in the VAB would be handy to have as a next feature. What about the (config) option of disabling time requirements in sandbox mode and only keeping it in career mode, if not already done like that. Then sandbox mode could be a test bed for rockets, at least until the simulation feature is implemented.