Well, there's always Luria, which currently has the strongest economy of the continent. And a stupidly favorable geography. And while Astrum has a good advance on everyone in terms of CS, who knows how much of that is militia in its cities and other random regions. Add in the distance, and what was seen in the past, Luria could challenge Astrum. Even if it absorbed Morek, I'd reckon.
Then you could add in the rest of the continent. It'd be a fantastic opportunity for Fissoa and Madina to get involved, for example.
Pffff, as if.