√ A contest for designs of the Apollo cabin and lander that would have allowed longer stays with more comfort and less problems
√ An interior designed to allow astronauts to lay down stretched out even if they had to take turns doing so.
√ An awning structure easy to unfold and that would automatically turn to follow the sun to keep the Apollo module in the shade would have allowed longer stays without the interior overheating
√ An electrically charged “rug” under the ladder to remove moondust from boots and gloves.
√ Boots easy to step out of, and back into, so as not to bring dust inside
√ And/or an electrically charged blower to remove dust from spacesuits, particularly boots and legs, but also gloves and arms after handling moon dust or rocks, and butts if the astronaut sat down on the Moon’s surface
√ NASA had planned three more missions, each one with new missions, at more interesting locations, but this was killed by Congress.