Any thoughts on "migration" campaigns?

[Morte66]

Has anyone done a “migration” campaign with EB using current rule? I mean one where your faction conquers somewhere a fair way off and makes it their main home, perhaps abandoning their original region altogether. Anything you conquer along the way is incidental, a means rather than an end. Apart from Vonsh’s Saka AAR, which is a bit different because nomad factions have their own rules for governments, I couldn’t find much.

Does anybody have any general advice on this?

[I’m considering having the Armenians migrate to the north shore of the Black Sea to get away from the Seleucids. After playing Pontos, it seems a fairly sensible thing for the Armenians to do. They won’t be able to build many of their native troops there, but their only troops that seem really special are the cataphract generals that they’ll keep. The archer cataphracts look nice but cost every mnai they’re worth, so they’re not vital when you can have regular horse archers. Apart from the that the Helleno-Skythian troops around the Crimea look like an improvement – classical hoplites instead of ordinary spearmen, dirt cheap Hellenic archers for garrisons as well as mid-priced Skythian archers for battles, and so on.]