I enjoyed reading this, agreed with most of it.
Perdan's armies are highly elite due to a long running military tradition and powerful central government. While most of the Kingdom is dark and tangled woods, populated only by the brave and the hardy, the coastal trade keeps the cities and townslands rich.
Ibladesh's economy was stopped since I was ever in EC, Perleone is half a welfare state, feeding a city that does literally nothing.
Vix is largely a mountain state, they remind me of what a militant Switzerland would look like, or a unified Balkans but inland