Thanks for moderating and sharing information about the visa process here!
There are many selectees from Cameroon and other African countries with large CNs higher than 70k even, only that they are hardly on forums.
My point is that if half of the winning lot is always a waste in the eDV process since its inception (DV-1), then DV2015 will not be an exception and that's why KCC declared 125k winners in the first place. This means that CNs are merely ID numbers that are also used to control the queue. So, whether your CN is large you may still get an interview at the end!
Also, please keep your stories within legal limits; do not try to break US laws or local laws because you want to inform people about the visa process.
And finally, note that you can as well ask questions directly to the KCC and they are always ready to answer your questions. When I started, I could not access the DS-260. Then I complained to the KCC in writing and the response I got was the best advice anyone could get. The same applies to the VB numbers for Africa we are getting now. I may have to ask the KCC that the numbers for Africa do not resemble our CNs and many of us are extremely worried! Because we know that the US government has never given bounce checks since 1776 and that is why the US government securities have always been considered as the standard for Risk Free Interest Rate the whole wide world. So, I believe that the eDV visa process is well managed by the US government even if I end up without a visa!