If you're interested in these things, try checking out EVE politics
. Evony's politics are fundamentally flawed because of the constant launch of new servers. Every time a new server launches, half the population of the previous server(s) joins the new one. Offcourse new players will pretty much always join a newer server over an older server because of the advantage older players would have.
The players that do stay in their server in Evony will all end up having a ton of villages with a ton of troops. At which point the game basically stales because nobody can break eachother.
I hope DoF will have something to prevent this from happening. The only solution I can come up with is having winning conditions. The reason current MMORTS's like evony shy away from it is because players would be ****ED if all the money they put into building their cities etc. would just dissapear. But with a monthly fee this issue doesn't really exist anymore.
Now there's one interesting browser MMORTS out there which has a winning condition, Lord of Ultima. I don't quite remember it but I believe it was about placing forts on top of specific locations on the map, then controlling those. If your alliance controlled enough of those locations and held them for a certain time, the alliance leader would be crowned Lord of Ultima, and the server would reset.
The downside of this is that it would force everyone to clump together in massive alliances and eventually into 2 alliances. But that's highly likely to happen with our without winning conditions.