I always figured the Consult doesn't recruit people because they rely so utterly on secrecy and deceit. They kill and replace people, they don't recruit them. Skinspies live longer, are harder to kill, more trustworthy and so on. They don't need more sorcerers right now, no matter how powerful they are. The only useful sorcerers in the world are the Mandate and they haven't even fought them in centuries or thereabouts.
I think the breeding of Ursranc is very telling. If they're bred to be more stable and controlling sranc that can use more complicated gear and use actual tactics, they're probably bred with humans in some suitably unpleasant way or just genetically altered to be useful as warriors or assistants. There must be some humans working with the Consult that aren't sorcerers and they've got to be fucking something. If they're Few, great, they can be taught some magic but I don't think they actively breed just for that. They rely on constructs and few of them seem magical. They rely on weapon races. They rely on sneaking and people not even realising they exist. Why would they need a crazy big army? Even a sorcerous one? Nobody is going to attack them until they see the Ordeal coming...and even then, it's a bit late to start a breeding program or recruit sorcerers because again, they're all pretty much Team Kellhus. If Kellhus is going to save their souls anyway, why do they need to believe the IF? What if Kellhus has his own IF that he shows to doubters?
I just don't believe the Consult have anything but some Nonmen (who will have plenty of sorcerers), Ursranc, a few human dudes (who are probably not very good at fighting) and a lot of weapon races like sranc, bashrag and wracu. Maybe they can very quickly churn out skinspies that are just designed for fighting but nothing else? They certainly seem content to send them out to die uselessly to convince Kellhus he's keeping good tabs on them. I think the Consult's forces will just be a few very old names of unspeakable power and a lot of chaff. I don't see any need in their recent history (couple of centuries, hell even couple of decades) that suggests they'd ever want/need lots of sorcerers in the first place.