We see that there are multiple factions in this big cosmere-wide war, but what stood out to me is that the Scadrians were initially wary of Nomad being a radiant, or oathed, but not that much when they found out he was just a Rosharan. To me this implies that the Radiants are, at least mostly, on one side of the war. Could this mean that Odium gets his way, and gets to lead the radiants in the war against the rest of the cosmere? This might even be a cool second SA arc, where we see characters we know trying to both obey (as they have to, due to their oaths, in order not to kill their spren), and also not cause too much harm as unwilling participants in the war. There might even be some characters we know and love who ended their oaths to not participate in this, causing a second recreance (this might be how Nomad loses his windrunner spren).