To add some major depth into the game, I think there should be ways to indirectly change our followers' way of living. Something that I'd love to see in Godus is being able to maintain a ecosystem, one were you would have to balance prey and predators or else there would be consequences. Having more variety of wildlife within the ecosystem should be more beneficial and easier to maintain for a longer period of time. This all would be a great way to have us do more things in the game before we get bored.

Here is an example of how it would work. Lets say you have very large fields in Godus, these fields would generate rabbits. If there are no predators, over time these rabbits will destroy your grassy open lands, making you unable have farms in those places. The appearance of this land should be similar to blight. To counteract this you would require to put up some rocks around the area, in return this would create a place suitable for wolves to generate which would eat the rabbits and maintain the ecosystem. Thus allowing you to have farms.

Now lets talk about an example of too many predators. Creating too many trees would generate bears, bears are a good way to maintain the wolf population and a fish population, but too many of them will hurt your own follower population. So while your people may like trees, creating too many of them is problematic. Anyway I hope you understand what I'm saying, this will keep things fun, challenging, and allow us to great a unique and beautiful environment all at the same time.