It would be great to have a possibility to claim resources outside settlement. For example if you dug a mine with high quality iron, or found a gold deposit, or some other valuable resource which is not on your claim. Why should you share your hard earned resource with somebody else?
I think it would be fair to have some extra small monuments per each large guild.
Extra monuments should be destroyable during Judgement Hour.
This will extend possible war motivations, large guilds will fight with each other for resources. Instead of just plundering foes city during Judgement Hour.