Spiral campaigns.

In single-player maps, the AI exhibits "stupidity." It either doesn't advance, even though it should according to all the rules. You approach it, and it has a large army, but it doesn't come to you, and you can't defeat it when you approach. Or, it makes foolish upgrades to its units that don't provide any benefit. This is a common occurrence. In the campaign, the same issues I described become apparent. And the further you go, the more obvious they become. In the end, it becomes definitely uninteresting to play. But if I were to modify the campaigns as well, it would take a lot of time, and I would never finish, and I wouldn't be able to realize my ideas in a single map. I want to make the maps longer, so that there aren't just 8 cities, but more – up to 24, and the distance between the cities isn't minimal, but somewhere between 90 and 180.