I think you need several more boards. The current ones don't cover everything. I see the need for:
* Other roguelikes. Not all roguelikes are major or newborn. BTW Do you mean "newborn", or just "new"? For example, I would count DoomRL as "new" (since it is new compared to the major ones) but not as "newborn" (since it is here for some time already). Also I don't know why the GenRoguelikes thread has been put in major roguelikes, it has nothing to do with ADOM, Nethack, Crawl, or Moria variants.
* Roguelike development. For those who do not want to use usenet for some reason. Although the developers probably know how to use usenet (we will see as the site progresses), I think there might be people with ideas usable in roguelikes to share who do not. I think this section should be inviting for players too. Something like "For those who need help in writing a roguelike, and those who have ideas that could be implemented." I understand "Newborn roguelikes" to be related to specific games, while this would be not.
* All roguelikes. For topics which are not linked to any specific roguelike, and are not linked to development either. I understand "General Discussion" to be about things not related to roguelikes themselves.