I've seen a lot of posts on here saying Dalinars whole unite them thing is insisting he'll take up Tanavasts Shard and become Unity instead of honor. This got me thinking and I just noticed the similiarity to mistborn. In this series we see a Shard choose someone to be its next vessel, and then that same person chosen to be another Shards champion. Dalinar was chosen to be odiums champion. My thought is that the Stormfather was supposed to show the vessels to the person who would become Honors next vessel. So right there we see that odium groomed Dalinar from a young age and Dalinar was also chosen by the Stormfather aka Honor. When Dalinar visits the Nightwatcher Cultivation intervened knowing that Dalinar was odiums champion. I think that the unite them thing isn't about the splinters of Honor, though it very well could be a reference to him eventually becoming Honor, but I think it's about him becoming all three and achieving this figure of Unity. This could go even further. Dalinar may in fact be the person who unites all the Shards and recreates adonalsium. Or I could be completely wrong and he dies who knows
Edit: so I reread the Ascension scene and something that sticks out to me is the way Odium said we killed you. We. We know that Odium killed Honor so I don't think he's referring to him, I think he's referring to Adonalsium.