I have wanted Static (set) Borders for a long time and just recently have been thinking about how to implement them. I play all my Civ IV games using extremely large maps so having a neighbor civ being a close neighbor is unlikely where everyone has room to expand to 30 or so cities easily without coming into contact with another civs borders. Which leads me to think about the American West after all the wars and all the








was settled there was all this unsettled land inside the borders of America. But there would be a need for a few new game play mechanics. 1.) Static Border Set
2.) Border Conflicts (Without Full War)
3.) Worker Colony (From Civ 3)
1- The ability to set your Nations Static Border after reaching Map Making(Possibly)
By using the Globe view, Strategic View, you may set your national borders beyond your current culture borders. The Static Border will not expand your sight radius or your culture border to the static border but will allow other nations show that you as a Sovereign Nation lay claim to the land beyond the border. This should show up as a darkened area of your nations culture color instead of the bright color.
2- The Static Border will not stop other nations from pushing into the lands or settling the lands and will not start automatic war with your country. Instead we introduce a new game play feature. Border Conflict - the area where between your border and culture border that an enemy country lays claim or has settled without consent can start a border conflict where all military units maybe attacked without enacting full war. This includes cities that lay within the two different static borders set by you and your rival. Border Conflicts can escalate into full blown war. Border conflicts are settled in a couple ways. War is declared and one side defeats the other or a diplomatic solution comes with an agreement on the border line between the countries involved.
Static Borders stop all Culture Borders from expanding beyond the line set but not the culture. A city on the other side can still flip but it will have to ask for permission... - could implement Civil War mechanic if denied permission?
Land Claiming... Ever see a random island that you wanted but you couldn't get to for whatever reason? Claim it with Static Border (small to medium (yea yea, I know it depends on map size) islands only). Must have a fort and a defending land unit on the Island to hold claim to it. - Can be involved with Border conflict.
3- Bring back worker colonies from Civ III
Probably one of the best ideas of Civ III the worker Colony. Reintroduce it with Civ V or VI but this time give the colony a little life... the worker colony can get Religion gain a culture border 1 radius from the colony around. Plus you may build things to upgrade the output of the colony (Resources)? And Along side worker Colonies there should be Worker Ports... Where you have an island with resources but you really don't want to place a city on it... blam... a worker port and Worker colonies.
Other - I would also love to see some new things such as Naval Bases and Air Bases (returned) to the game. Each allowing a few things. Naval Bases, can be placed on any sea tile that leads to ocean to allow for naval ships to out Sea and have a place to call Home. (random) Air Bases allow you to add air power any where you need it. They also can repair damage units not close to home. They must be guarded by ground forces or can be taken over by enemies.
Ideas, thoughts... I know its a half an half post... sorry.