Ouch on 3 hours of work going missing...
Well Kellhus was a prodigy, Old Moe was the "better" of the other folk who killed themselves and Koringhus was beyond all other brethern. So that's 3 generations also the anasurimbor Seed is the most promising of the 12 germs.
I suspect Crabicus will be similarly gifted, but obviously he is unfettered, not born on the road anymore. (see Koringhus musing in TGO) . On the where is Crabicus debate? He's probably the most talented brain left in existence, no chance he was going to turn up at the Ark he's spent his life as the understudy to The Survivor. Sure Akka and Mimara are heading that way to save Esme, although they tell themselves it's to judge Kellhus. Crabicus probably wisely decided to head the opposite direction of the mushroom cloud, the crazed wizard, the pregnant lady who caused your father to commit suicide, and the horde of syclenvendi led by a total maniac.