*Curethan uses resurrection.*
My theories on what is to come change from day to day. I'm more comfortable speculating on interpretations of the consistent world building and the possibilities of what has come before.
Just for laughs though, I'll attempt to amuse with some predictions. Interested in what others think might happen if anyone else wants to add some lengthy post of hogwash.
In Momemn, I think it's Esme and Meppa vs Psatma and the WLW. I'm thinking Fanayal or Kelmomas might be the 'emperor' that the WLW kills. Fanayal has actually been anointed by Kellhus, Ajokli or Gilgaol. Without any reason to guess one way or another, I can't guess further at his role but I think he will die one way or another. Meppa to somehow save Esme from WLW - he will lose his shit when they meet. Malowebi may be the key to getting Meppa and Esme united against Psatma/Yatwer - I think he will remind Esme of Akka. The new empire is def screwed though. Only Malowebi and Esme survive.
Sorweel and co will find Ishterebinth largely empty and the remaining intact will be ignorant of the supposed deal with Kellhus. Consult agents (who have intercepted Kellhus' previous attempts at contact) will try to kill them. Sorweel will be revealed as Yatwer's pawn and may convince the remaining intact to sacrifice themselves in this final conflict.
The ordeal will founder at Dagliash. Some type of elaborate double cross with the nonmen who are allied with the consult. Kellhus has anticipated it and fakes his death and heads to Golgotteroth, possibly with the remnants of the Mandate and some of the Swayali (the destruction of the Mandate's army was a deliberate sacrifice to convince the Consult they are spent). The Ordeal will be besieged at Dagliash, subsisting on Sranc meat and fanatacism. Lead by Proyas (who knows Kellhus isn't dead) they will hold out, keeping the consult busy. Kayutas will be key to stopping the skin spies from infiltrating.
Akka and Mimara fart around amongst the ruins of Ishual. His dreams worsen and convincing him that the no-god is about to rise again. He realizes that their child will be the first stillborn when Mog rises. Kellhus turns up and Akka lays aside his quest for vengeance. They head to Golgotteroth.
Whatever happens there, happens off screen. The ordeal is almost destroyed, Sorweel and the intact turn up but can only slow the inevitable. They feel the Mog arise in Golgotteroth. Dragons turn up at Dagliash, the sranc start to scream 'WHAT DO YOU SEE' etc. All is lost...
BOOM! Golgotteroth explodes on the horizon. The whole world becomes anarcane ground. The hundred are banished, sorcery no longer works. Proyas and Sorweel survive. They find Akka's body clutching a new born baby, Kellhus nearby. Sorweel kills Kellhus who seems happy to die.