I had the idea of, get this, Seasons, The server could be set to a selection of seasons, such as, Winter, Summer, Fall, Spring, In Spring, some of the trees would have leaves as some still wouldn't, and it would rain more often. In winter, I saw a video talking about them adding clothing, so in winter there would be heavier clothing which would be needed to control body heat levels, there would be snow on the ground, and non-evergreens wouldn't have leaves on them. In Fall, the leaves would be red, orange, yellow, etc. And finally, in summer, it could be the way of how it is now, green grass, etc. I just kind of thought this up randomly and thought it would be a good idea to throw out there.