Can you please add an option to "Core-ify" all cities in the selected nation? It's bit annoying that you should "Core-ify" every single city manually to not affect economy, especially in custom scenarios. Also, thank you!
I'll add to this suggestion an option to annex all puppet states of a nation, so it would be easier to simulate some WW2 Scenarios like "puppetarization" of Vichy France.
