[militarist]

I don't play YARG2, but we are just about to start another NO DIPLO one, so i'll join discussion.
No meta-gaming? It's interesting. I don't think it's possible to avoid metagaming completely. When you attack enemy province you not always want war. And you can show it just by stopping crusade and withdrawing armies instead of taking another province. Is some situations it will be a very clear sign. And such "non-verbal language" is extremely hard to avoid and prevent. But is it really game-ruining? And with a good imagination you can find ways to deliver a message in some cases,mostly when enemy has all reasons to look for such signs (both nations have good armies, and aggressor had more need for that province(it neighbors his capital), or just the province is valuable for both but aggressor just is obviously stronger in all charts, so when he attacks and withdraws it's am obvious message "i just need this province because it's 20k+ and I like that damn adepts of silver order I can hire here .").

To make RAND completely RAND you should have a rule - if you took enemy province you should fight him till death. I'm not sure it's good idea though.