I love the limited farming. I hated it at first, but now I see how great it is for this server. The cow kingdom has to trade with the wheat kingdom, pig/horses with the carrot kingdom, etc. It encourages diplomatic relations. If there is an embargo and everything else fails, the king can still go to war and the players can take what they need to keep their kingdom thriving. The other kings can also list a player as "Wanted", where they can be hunted, instead of declaring war on a whole kingdom just because of one player.
Of course, some kings like this function more than the others...