Like east and west Roman Empire.
I actually like that idea.
I don't think it will ever happen tho.
I mean, the RG is pretty heavily inspired by the roman emperor Diocletian, a man who stabilized the Empire, implemented extensive reforms, reduced size of the legions to 1000 men, to prevent military rebellions (as one of the reasons), ruled with three other co-emperors in form of so-called Tetrarchy and split the empire into two parts - Western and Eastern. I mean, the parallels are pretty eye-gouging, even if in 40k, the splitting of the Imperium is not RG's doing.(Also in 40k, the capital seems to be located in the "Eastern" part of the Imperium, rather than in "Western" which has fallen and si playground for "barbarians", but that's beside the point.
But since now we have chap named Belisarius running around (which is probably inspired by the Byzantine general of the same name, who for a short time reconquered parts of the Western Empire and even Rome itself), the "East-West" conflict would be unlikely if we would solely rely on historical parallels. However I doubt the GW would slavishly try to repeat Roman history, so anything is possible.
Concerning the discussion above me: How funny/ironic would it be, if the Abaddon would become the one who holds the gate, and the Imperium the forced to send crusades through that gate?
Edited by RapatoR, 07 March 2019 - 12:58 PM.