I was toying with the idea of The Ra challenge...
But there are some issues:
1) It will need to have a few parts and it's not easy to find good ones that are hard yet solvable.
2) If there're only 10 Gebs, it means The Ra will only be available to these 10 members. Kinda of wasteful :P
3) There won't be an end. What next after The Ra?
4) The current shape of the Pyramid won't work.