the fact that there will be conflict and that structures will need to be rebuilt / repaired is one of the draws to this game for me.
I am more of a builder / gatherer / explorer type play (I'm not great at pvp). and the idea of logging into the game and immediately being directed by my organization to help rebuild an outpost that has been attacked, sounds like great fun.
as far a city design goes, I think the first organised city's will be built by organizations, as most solo builders are more likely to want there own little homestead / mine / etc. and this would push them further a part (depending on diameter of the claims)
I can't wait to see what people do with this game when it becomes available