This has probably already been suggested, but...
I think just like you have to connect resources/luxuries with a road you should also be required to have trade routes to bring resources/luxuries from overseas colonies to your homeland. This would add a whole new dimension to naval warfare and make building a navy more necessary than it is now... I know that I for one seldom build a navy now, but if this feature were implemented then I would be more inclined to do it. Ships and submarines can interrupt the trade routes and maybe 'pirate' the goods and take them for themselves, so it will make it necessary for CIVs to build escorts to protect the transport vessels. It will also make building privateers and submarines much more useful because you could bring an island based civ to it's knees if you can cut off it's supplies from it's overseas colonies.
And this brings me to the issue of colonies which I think should be done differently than now. I think colonies should basically be what all cities start out as and they can later grow into cities. I do not think they should be absorbed by an enemy civ when it's borders cover it as it does now, it is because of this that I do not ever build colonies. In fact, I think colonies should have some borders of it's own, albeit not very large. Colonies should be able to build explorers and simple military units, but nothing advanced like artillery. If you want the advanced military you will have to ship them in from your homeland. Colonies should also be effected differently by corruption/waste than cities, though I haven't really thought about how that would work...
Thoughts?
I think just like you have to connect resources/luxuries with a road you should also be required to have trade routes to bring resources/luxuries from overseas colonies to your homeland. This would add a whole new dimension to naval warfare and make building a navy more necessary than it is now... I know that I for one seldom build a navy now, but if this feature were implemented then I would be more inclined to do it. Ships and submarines can interrupt the trade routes and maybe 'pirate' the goods and take them for themselves, so it will make it necessary for CIVs to build escorts to protect the transport vessels. It will also make building privateers and submarines much more useful because you could bring an island based civ to it's knees if you can cut off it's supplies from it's overseas colonies.
And this brings me to the issue of colonies which I think should be done differently than now. I think colonies should basically be what all cities start out as and they can later grow into cities. I do not think they should be absorbed by an enemy civ when it's borders cover it as it does now, it is because of this that I do not ever build colonies. In fact, I think colonies should have some borders of it's own, albeit not very large. Colonies should be able to build explorers and simple military units, but nothing advanced like artillery. If you want the advanced military you will have to ship them in from your homeland. Colonies should also be effected differently by corruption/waste than cities, though I haven't really thought about how that would work...
Thoughts?