Yes, the international community should have done more to keep the Libyan civil war death toll lower. I believe that if a country is in need and there is another country that can help out, then they should. It is important that we work together to make the world a safer place.
After the beginning of the Libyan Civil war, the United Nations passed a resolution which froze the assets of Gadaffi and his inner circle, but this action did not stop his forces from furthering their aggression towards the people. The UN later established a No fly zone, but this measure also did not bring a ceasefire to the war.
I do not believe the international community should have done more to keep the Libyan civil war death toll lower. I believe countries should handle their own affairs and a civil war should be settled within a countries borders without interruption from other countries. This will help the better side win in the end.
Civil war is a horrible thing, but the international community is not a babysitter. It cannot and should not poke its nose into every other country's business. If a country has problems, let them deal with their problems in their own way. We can't save everyone. People will die in civil wars, that's just a fact of life, and one that must be accepted. Unless it involves a violation of international law, we should stay out of it.
The international community does not exist to be the police of the world, but rather to enforce international regulations and trade agreements. There was little that outside intervention could have done but increase the death toll in the Libyan civil war, and in fact outside involvement could have made it even worse.