Look at what is happening with the ICC. While one can or cannot argue bias, Al Bashir deserves to be prosecuted...but watch all the big African Men stick together and protect each other.
And we can't even talk about it properly without either being called racist or anti african. What would be an oversight organ for your "sovereign pool"? And thats where all such systems break down unless rule of laws and accountability is in effect for all its members. And while some of this may originate from the west and its private corporations, and the dark effects of colonial heritage , the majority of transgressions are good old simple hunger for money and power, accelerated by extortion of African leaders. Sad...but true.