Some talks are already out concerning the different alliances and their weirdness, especially Orks and Imperial Guards.
the WH40K universe being so vaste and filled with lore, it would be awesome to include in the rulebook or a separate mini novel in the core set a story background explaining the different struggles and goals of each factions and why some are allied with others.
That would give us an awesome background story of the game and would explain a lot about the alliance choices of every factions.
What do you guys think?