Someone mentioned weather but didn't get any kind of response. I think this would be a huge addition to the game and I'm thinking it hasn't been addressed because it's impossible or no one else thinks so. I think just rain would be nice, just for aesthetic reasons such as having the road have that glassy effect. The next step is, of course, snow. The next step after that is making these things actually affect game play. I.E. the water freezes, so the player would have to upgrade to ice breaker ferries or some such business, and traffic worsens. The final step would to be to have utilities for snow, such as one would have to place road clearing vehicle depots which would have to be payed for. I realized this would all be extremely difficult as I'm sure it would involve making secondary models of all buildings but I'm wondering if any one has even visited this possibility.