[jyl]

How would you change the solar system, if you could, assuming you remain bound by physical laws?

Would you like two planets in the habitable zone where Earth is, so that we might have intelligent life just light seconds away? Multiple moons for Earth, so it there would always be moonlight at night? A bigger moon, for stronger tidal effects? More gas giants, more rings? A smaller Earth, with lower gravity and a thinner atmosphere?