I can't help but feel like the lack of map generation options is going to hurt Civ Rev's replayability. Messing around with all the world creation options in PC Civilization games depending on whether you felt like playing a long vs a quick game, on islands vs on a single continent, etc really helped extend the life of the game by letting you try out different strategies in different situations.
Without these kinds of options in Civ Rev, how much of a reward is there for, say, building a navy? If every single generated map is going to be of the one-snaky-continent type we've seen in the demo, I feel like the scope of the game is going to become quite limited. I played about 6 games of the demo, and while it was super fun at first that fun started wearing off as I became more and more efficient at exploiting the same scenario rather than having to think and adjust to different conditions.