Has the United Nations outlived its usefulness in World Order or does it need to be reorganized?

It needs to go the way of the League of Nations. It is worse than useless; it is a place that allows repressive regimes to run human rights commissions and other such nonsense. Its peacekeepers cannot keep the peace and simply become targets until they retreat, and its inspectors and sanctions managers are typically bribed by those supposedly being sanctioned.

They have the same effect as six wolves and a sheep voting on what's for super; the repressive regimes outnumber the responsible ones.

COL Mikel J. Burroughs The UN is a great idea, poorly executed.
The UN gives the symbolic representation to the world is working to solve problems, when in reality the UN is a bunch of self-interested people serving themselves engaged in cronyism.
It provides the gloss or cover of legitimacy without the action and passion behind it.
Governments are made legitimate via the social contract that exists with the population of the nation. In the US we have a direct election for Congress and indirect for the President via the electors within the Republican system.
The UN has NO members directly elected by anyone, these representatives are appointed. Nothing in the US constitution speaks to the enumerated powers vested in a supra-national government.
The UN is not a legitimate government and represents NO ONE.
You have some people like CPT (Join to see) that see problems in the world and want to resolve these issues. Great idea, we want to solve world problems now!
The UN is not granted the power, resources or authority to resolve any world problem but because it exists, some people assume that it may actually have the ability to do it.
ANY power, resources or authority granted will be LOST to the people who need it because the money will be redirected through the bureaucracy.

In summary, the UN does not solve problems, not legitimate, all resources provided are shamelessly redirected to the benefit of the politically connected. Good hearted people are misled.

I worked for the UN in NY from 2008 to 2011, and I can say that the UN is not what it is cracked to be. Laws are only passed based on the member countries who agree to use what ever comes up during the General Assembly. The Security Council in which the 5 main permanent countries, (which are the same allied nations since WWII, which is UK, US, Russia, France, and China)... With 10 others who are voted in, but the majority votes come from whether the permanent members allow it. It is a dog and pony show for that place, and the US is the biggest contributor in funding at almost 23% of its financial deficit, the second largest is Japan at almost 11%, with only 3 other countries in the single digits, leaving the other countries at .005% for contributions...

Because it is such a controversial organizations, it is limited on power and can only use the Security Council to make laws that only benefit what is sees fit, and the General Assembly (GA) uses its two yearly functions to address matters that universally will be used worldwide, but its no guarantee. If you think about all rules and laws that apply such as the Geneva Convention, other countries that are members of the UN don't follow the rules or policies but are not even punished or expelled from the member seat.. So goes to show how political the UN really is...