Ok, so I usually play progress on standard size, so I have quite a number of cities. Foreign advisor is completely broken/unbalanced unless you have desert start with plenty of stone/salt/incense or lots and lots of fishing boats. Let me explain:
ForeignCityGood.xml never launches. Have been playing for a month now or so and never seen this in action. Never. Losing 75


scaling seems to happen always. Scaling. Since whole event takes 100 turns, it usually takes 2 turns worth of culture yields. And then there's unholy -1

for farms, which makes any non-cluster non-wheat farm completely useless for couple eras.
What are possible gains? 2

to camps (gold is rarely problem when it launches), 2

on food heavy tiles often with food monopolies - completely useless, 2

on some tiles which is very good or 2

on fishing boats - only thing really worth taking. And 1 unit of Ivory/Glass/Porcelain if you're lucky, which is good. Just... not good enough to justify losing so much culture and this horrible farm event, one that can really change whole game. Comparison - progress policy gives you 3


per

and event takes half of your early policy effect for a benefit couple eras later.