Returning to the Moon
Engineers are going to sweat over it once again; how to land on the Moon without spending too much and saving as much weight as possible...Like standing up in the spacecraft!
I still believe an unpressurized lander (far less heavy!!) would be the answer! A pressurized moonbus would have preceded the first manned landing...Unless the plan is to land, walk a little, collect samples and return back to orbit to dock with the CEV (all this could be done within a timeframe short enough for astronauts not to have to refurbish their spacesuit).