Just got back from spending a few days in Belgium, and loved it, and now I'm interesting in doing a game as Belgium. Problem is, I've tried it a couple of times before, and Prussia always declares war (and sometimes on The Netherlands, too). Is that everyone's experience, or did I just have bad luck?
The way I see it, the Treaty of London in 1839 should just about guarantee that nobody invades Belgium, and it did until 1914, but it's not implemented into the game.