I notice alot of scenarios feature an "international" port and or an "international" airport to limit the number of cities that have trade connections to speed up load times. My question is from what I have seen these are small wonders and if you capture an enemy city with one you lose it and break the trade chain so what I was considering is making these improvements rather than wonders that require a special resource be available in the city radius in order to build that way when you capture an enemy city on a different continent you can build the int port or airport and have access to the resources on the new land mass would this work in the same way to decrease load times? Also would this make those cities with this resource more valuable to the AI so that the AI would target them? Also then would islands be required to have an airfield (not airport) on them to be "connected" and able to build units requiring resources that you have but not on those islands?
), but if it is the case, interesting! But caution, these will slow down loading times as well...

