Create a function where taking a territory triggers effect(s) elsewhere in the map
Specifics:
Example would be taking the top of a mountain sends an avalanche down to hit 1-3 territories at the bottom - either wiping out totally and setting each to neutral, or doing an automated attack to the death with a set number of AI controlled armies.
Some events would be automatic for taking the territory, others would be player controllable - taking the Command Centre lets you fire the Death Ray once only (which hits a number of territories on the other side of the map with an uber-bombardment.
Another example would be taking a territory called "Lever" lets u drop the portcullis on the territory called "Gate" for damage/obliteration as described above.
Take the territory called "Electric Switch" and you zap all territories with metal floors
Take the territory called "Sluice Gate" at the top of a dam, then u can flood the valley!
This will improve the following aspects of the site:
Adds to the fun and chaos
Gives more aspects to include when making maps or playing them
The unwise player may end up causing themself more damage than they managed to inflict on their enemies!