Can provinces lose development?

[neondt]

As development is a paid feature, it cannot be implemented in the base game. So if it is not included in Common Sense, it will probably never happen (or maybe if development is included in another expansion, as national focus for example). It's a good idea though.

Development is not a paid feature. Development is just the sum of base tax, base production, and base manpower in a province. CS is only required if you want to spend MP to instantly increase one of these values. There are already a large number of events that both increase and decrease "development" (base tax and base manpower, currently). Discussions of paid/free features and DLC are not relevant to this topic.

On topic, I don't think punishing the losers of wars even further would be a good thing.