Something I have been trying to figure out how to get working is this.
Within Civ IV you have the Cottage tile improvement, which, over time and if the tile is worked, grows to a Hamlet, then a Village and finally a Town. This improvement can only built within your borders.
In the Final Frontier you have resources in the Asteroid fields that can be exploited, but again, only if they are within your borders. To get them within your borders you must build a Starbase.
Why can't we do the following.
Build an outpost on the Asteroid Tile we want to exploit (mostly because it has a resource we want/need). Upon completion of the outpost it establishes a border around itself claiming the tile for your Civ.
Now comes the complicated part. In order for this to work as I have envisioned, you must have the following.
A connection by trade route between your newly built outpost and a star system you control. In order for the Outpost tile to grow, it must be supplied with food from the closest (or any)star sytem. Provided you can supply the outpost with food for the designated growth period required, the outpost will grow in size and begin generating a little of it's own food. By the time the outpost has grown, over time, to it's maximum possible size the outpost will have become self sufficient. Depending on random events it is possible some of these outposts could even generate a surplus of food which it can add to an overall food bank that supports other outposts enabling them to grow.
Just a thought, Surplus Food Bank, could be a new feature which you could add to by turning on the Do Not Grow for a Star System. It wouldn't need to be micro managed, you could set it up so you get messages when there is less than 10 or 20 food in the Bank so you can replenish it.
Sorry, I'm an ideas man, not a coder/programmer.
I know that at least one part of this can be done as we already have something similar in the B5 Mod. When a ship creates (read builds an improvement) a jump point it claims the tile it is on. Once the unit has jumped away, and provided there are no other ship units present on the tile to maintain the tile and keep the jump point open, it will close and the ownership reverts to normal. This same process could be applied to the mining outpost idea suggested above. But in this case the improvement itself maintains the one tile ownership, no unit is required to maintain it.
I tried to take screen shots but my F12 key is the Print Screen key. Every time I tried to take a screen shot, I opened the civilopedia menu which got its picture taken (see below)
I will upload a/multiple screen shot(s) to demonstrate what I mean as soon as I can.
OK, First image shows I cannot build a mining outpost outside my borders.
Second image shows manually added territory border which enables the building of the mining outpost.
Third image shows the manually added border has disappeared.
Fourth image shows the addition of a Starbase which adds a permanent border around it taking in the resource tiles and once again enabling the building of the mining outpost.
The downside of this strategy is that you loseaccess to an asteroid tile that could be exploited with a mining colony.
I noted you had added standard tile resources in your mod (Food/Hammers/Gold) The Asteroid mining facilities would be able to exploit these, and increase them over time, which then feeds production and gold back to the nearest Star System. You could also bring in a small chance of the asteroid tile becoming exhausted and making the maintenance of a mining facility pointless, at which point one of the following could occur - Abandon the facility, leaving it to become somewhere pirates/barbs could spawn from.
You destroy/pillage the facility at which point it either removes the asteroid tile (same as chopping but with no further benefits).
You pay a one off fee and the Mining Facility becomes a Research Facility which sustains iteslf with food but it's prior production output now becomes Science to boost your research.
I'm keen to hear whether or not any of these ideas/suggestions are possible.