Oh yeah, rereading that was fun. Wilshire, you out did yourself! I love the implication: Kellhus knew the Empire would break up in his absence, so he seized the circumstance and figured out a way to win the second round of the Unification Wars.
I am hoping that Kelmomas will save us all as Meppa's disciple.
@ geoint, I don't think that's every mentioned, but Kellhus is so badass, who knows...
Surely it is no coincidence that Meppa takes the stage around the time Kellhus is moving out of easier warping range (if he actually does having warping limits).
In the end, I think the subject of "Kellhus' Limits" will have little to do with brute power and everything to do with the limits of what he will and won't do based on his upbringing and molding circumstances since he went south.