I've been saying for years that an ethnically homogeneous core mainland plus hard neocam-techcomm free private cities on coastal peripheries harvesting global human capital is an ideal balance. Ex:Japan could benefit from having an HK seastead but mainland should remain Japanese.
Without a nucleus (ethnonationalism), a Eukaryotic cell is just a giant bacterium. This is what Gay Race Communism wants. Without mitochondria, it's just a standard low-performance prokaryote. This is what the groypers want.