I'm not super good at making and explaining my theories, but here goes...
I think that in the latter half of the series, Dalinar will become the Shard Unity (Honor, Odium and Cultivation combined) (or War (Honor and Cultivation), if Unity isn't possible).
Dalinar has big ideals about unifying everything. I think that during the latter half of the series, the Stormfather will somehow become Honor, Dalinar will continue to be Bonded to the Stormfather, but in a different way--he's the Vessel of Honor. He's going to kill Taravangian and beat Odium, but I don't think that it will end there. Instead of attempting to Shatter Odium, he will try to take over the power, becoming the Shard of War. After that, he's going to continue to try to unify Roshar by taking over Cultivation's powers, becoming Unity. He won't stop there, and attempt to Unify the whole Cosmere (with Cephandrius' help, of course). Eventually, he will become the new Adonalsium unless the rest of the Cosmere has anything to say about it.
I know I'm not providing evidence, but it just makes sense in my head and it's kind of hard to explain it. If anyone wants to improve and shoot down this theory, feel free (basically, feedback is very wanted, be it good or bad). If anyone can find more evidence, please tell me so that I can put that in. If anyone wants to just rewrite it but better, that's awesome.
Thanks!