Having just finished my first game in BNW I can tell you this: I got stolen only two times around in the medieval era, and I had Monty of all, to coup my CS around 10 times in the whole game. I build the NIA because I wanted to sent my spy as diplomat to spread some more tourism to the final capital. Vs the AI spies now get a backseat, vs Humans though they can still prove critical.
The additional spy is really useful for converting city states and leveling up 6 spies is not bad at all. For a 2 city tall build it's like 10 turns of production total to get the required buildings and Nationa wonder, so it's a no brainer. Having the advantage in spy wars is more useful than most people realize. I guess most people are too lazy to micromanage them carefully.
I honestly wonder what the heck does the AI do with its spies now?
My best guess is diplomats.
But perhaps they also now keep a spy at home in their capital.
I really cant understand how you chaps can produce the military hardware needed for a domination game with only one city. The military requirements are enormous...Then again I assume most are playing Pangea with a lot of re-rolls for good starts.
Yeah, worst goes to National Treasury IMO. All those hammers for 8 GPT? Meh.
It's a question of quality vs quantity.
On the NIA, it's the only thing that in G&K finally brings spy stealing down to a reasonable rate. But it appears based on the help text that you actually need to build it in some city other than your capital.
Could someone please assist and explain why you need to build it outside your capital?
I can't find a reason.