nuclear engines need a nerf
it feels wrong to get to duna in two stages
I once managed to launch and land on Minmus only jettisoning one stage. The second stage had only a few liters left in it after landing, though. I then sent it to the Mun, where I tried to do the same thing with the third stage but the Mun is not quite so flat, so I had to quickly launch the lander off of it before it tipped over.