This is good to hear! I'll be very interested to see what comes with the new efforts!
There is a submod, still on the workshop called During the End, which for all intents and purposes was more or less already worthy of being called a "fork" from the main mod in and of itself. The mechanics, setting, and graphics were all very different from the base mod, and I believe the only thing even completely original from AtE was the map! I even believe there was to be an effort to have the game itself gradually "develop" into the world of AtE (think the rise of the Yudkows, the formation of the post apocalyptic faiths, etc). It has since depreciated with the official updates, and the author has put the mod on hold, but I remember it being a very unique experience for CK2, perhaps the most unique mod I've played for the title.
The point is, it will be interesting to see what those in the community, who are interested have to offer! I have no doubt the mod is in good hands, just by having played 9K's Judaism submod. This is to say nothing of what other concerned parties may have to bring too.
Finally, at risk of sounding a bit winded; I'd like to the thank Olaf and his fellow modders for hosting, and cultivating a completely original setting for CK2, and gracefully allowing the community to continue their work upon it if interested.