[Gameplay] Mining Outposts (to reduce city spam)
I'm thinking of a system loosely comparable to the GalCiv asteroid mining there.
Tapping resource tiles is extremely important. We all know that.
Building fully developed cities near every resource you find - just to tap it - is one major reason for city spam.
So what if that would not be necessary?
Let us build a mining outpost, that could do nothing but tap resource tiles within a range of 3-4.
The outpost itself adds no production but instead it is allowed one caravan.
This caravan transfers the full production to another city. Possibly with a small loss at really long ranges.
No buildings allowed save for purely military ones like walls. No troop training because it has no real population base.
That means we wouldn't have to "level up" the outpost just to be able to build food/mining/whatever multiplier improvements.
Another way to implement this would be to have an "outpost" improvement that could only be built at the very first city level and would have these effects / limitations.