Great mod but I have noticed a bug. I'm not sure if anyone else has mentioned it.
When at war with another civ and negotiating peace, you can ask them to be your vassal and they will always accept. I've had civs that were X6 times bigger than me in land area, bigger economy, more advanced and bigger military and they still always become my vassal if I ask them. Takes the fun away when I know I can just go to war with any civ and they submit easily. This even happens on the top two difficulty levels.
It would be good if you could also add to your mod a resolution in the United Nations similar to Civ IV where you can propose the UN collectively go to war against a particular Civ. Being able to build nukes while the Nuclear Non-Proliferation treaty is active is another and if found out by another civ through spying then the proposal in the UN for everyone to declare war can be activated. It could also be activated if a Civ is warmongering for example
Thanks.