I always role-play to an extent, in diplomacy and such, unless the other player doesn't seem to like it, in which case I will drop it.
I took it to another level in a game I am playing now though. I'm playing Neifelheim, and I figured, hey, these are hugely powerful Giants, who can kill entire armies by themselves. They are not going to meekly ask another nation to "please sign an NAP with us", or whatever. They are going to demand things.
So I started bullying all my neighbors. I told them to stay the hell away from so-and-so province, that my Jarls would go wherever they pleased, that we did not believe in NAPs with tiny beings we could easily crush, etc. Not actually declaring war, but being very rude. I was really role-playing.
Anyway, they all eventually ganged up on me and attacked me. So I think I will just leave it at diplomatic level in the future.
