JUst got back in glad you posted this. I am open to other views but no one has convinced me that this one levee board is not necessary. Whats infuriating is the papers are not explaining for instance what are the reasons for Livingston Parish's objections.
The only way you should have separate levee boards is if the levees are physically separated. If I understand (and please correct me if I'm wrong), the canal levees, river levees and lake levees were controlled by different boards, even though they were in a situation where if any one failed the whole system failed.
If New Oreleans is rebuilt below sea level again, it will need multiple redundent levees so that one failure will destroy a neighborhood instead of the city. There is no way that can be handled by multiple boards all getting their hands in the money pile.