I really hope that at the very least this outbreak will lead to societies examining what we can do better in the future, to prevent many lives being potentially ruined in like the course of a couple of weeks.
What we can do better in the future is stop screwing up the planet.
This virus was caused by a combination of aggressive urbanization, overpopulation, pollution and lack of hygiene, all things that contributed for stuff that was always isolated in the nature to come into contact with humans. So the simple yet impossible answer is "How about maybe we don't pour concrete upon each and every single tree we can find?"
New epidemics often arise in Asia and Africa because it's there that the combination of fast urbanization mixed with overpopulation and poor hygenic standards allows for these kind of viruses to mutate and transmit to humans. And if one day a pandemic comes out of Brazil, you can bet it's because of the deforestation of Amazonia. And if one day a bacteria that was tucked away in the ice is released again, you can thank the global warming for that.
This is quite simplicistic and stripped down, of course, but the virus didn't come out of nowhere. It was a matter of time until something like this happened. Or better - something
even worse than what had already happened, see the SARS for example, came along. And there's no easy and immediate plan of action for that, we can only hope to be better prepared next time, and that means making sure the sanitary system of our nations is considered the absolute and utmost priority in every politician's agenda.
Also how easily all of this spread is the definitive proof that, for better or worse, we're all connected, and that we need to think globally when it comes to the topics of utmost importance. One or two centuries ago, this would have stayed in China, or wouldn't have even happened in the first place. This time around it originated in December in China, exactly one month ago, 20th of February, was first spotted in Italy, and look where we are right now, all locked inside our homes with everything being cancelled, when was the last time an international major sporting event was postponed? I bet when Adolf Hitler was still alive.