First I presume you Jest in your implicit assumption that the UN is capable of doing anything to improve the situation even if they wanted to.
Second, as long as Someone from Africa sits in the Sec-General's chair no imporvement can be expected. I suspect we better start pushing for another Norwegian or South American or somebody who is not afraid of insulting his cousin who is running a rebal camp in some backwater part of Africa.
Why on earth do we insist on picking people from countries who can't even manage a simple hospital, let alone a country, let alone a continent, to manage the UN.