Another side-effect of eating sranc: increased lust. This won't be a problem really relative to swayali/non-sorcerers, but it could be a problem otherwise. Sorcerers lusting after sorcerers (whatever gender) could get messy. Actually, rethinking the swayali/non-sorcerer part, if a witch wants congress who knows what kind of destruction she could inflict on because of or as a byproduct of sranc lust. I'm not saying that all this stuff will undo the Great Ordeal, I'm sure Kellhus has already taken it into account and probably already run extensive research in this direction. I bet that's why he had Fatwall reclaimed.
Plus, eating sranc could push the Great Ordeal's sexual interests into a morbid direction.
IF Kellhus is going to eat sranc too (which I think unlikely) it would show solidarity and it might give him an edge in terms of an increased lust for violence, if he has already calculated that some personal battle madness is necessary to break the Consult.
Wonder if we'll get to a moment when the GO has eaten so much sranc and become so crazy that the sranc hoard is like "fuck this shit, I'm outa here."