What started off as an simple suggestion to bring back the Imperial Thought of the day derailed into my opinion on the story and what we could do from here.
For when I think of DoWIII's story, I think of the missed opportunity they had in the villain of Kyre, and the idea of a Khaine artifact.
I read Path of the Eldar, and I felt that the fluff writer here had not. If he had, he'd seen great opportunity for really making a xenos artifact of Khaine (from back when he was a whole God) pop out. Of course, we'd still need reason for Macha to disband from Kyre, so perhaps we could've played up the idea of an Eldari daemon prince (what a new idea) at the very least, threatening to cause permanent taint to Biel Tan's infinity circuit if it's set loose.
If you read the post I linked in the first sentence, I claim that the key thinking missing here is a good villain to really tie the narrative together. We need a villain, and it must NOT be related to Khorne.
So right now, I'm thinking about Necrons, and the tropes behind them.
I'm also trying to think of some good Necron novels that might help whoever is principally in charge of writing the fluff for the next campaign. If Necrons can have personality, then I'm really crossing my fingers for a Necron we can really enjoy dealing with (maybe even alleviate him to the status of recurring character).
So, given what we have, any ideas?