SS-18 ICBM
Oscillator
I modified the UA a bit to make them less religious per se and more defensive. The UU I changed lightly to make it less dependent on gold, and the Khachkar I didn't change because if you make it only an artifact, then they can't be produced until the industrial era.
Fair enough, I'm more concerned with the random chance though. I bet it could become frustrating not being able to plan around it. How about making it so all Great Works and Artifacts are Khachkars with half the original effect?
Thinking about it, this could be nice in order to prevent the Swiss from being the international isolationist pariah. Unique Diplomatic Modifiers sound very interesting. It's not enough though, so either an additional bonus or even being able to sign RAs and trade gold without a DoF could be added.Or maybe a diplomatic bonus of some kind?
gold bonus from trade routes when the city is on a river. Costal cities gain +2
food for every trade route into them; inland cities gain double
Influence resting point with city-states is increased by 30 when you have a trade route with them.
happiness when garrisoned in a city. Whenever it carries out an action for a city-state, it gains double
(also, I assume you mean trapping
)
I think it would need testing but maybe the defence bonus is a bit much. Maybe it should be 2 faith instead of that which is OP until you get a religion but after then, it is better to change it. Maybe the penalty to enemies should apply to everyone except Germania whether the city is captured or not. Then there would be incentive to destroy it or risk giving bonuses should Germania try to reclaim the city.