Primate How would you implement that?
Because it is a bit dangerous in the sense that big pre-made kingdoms would have all the advantage and may be in a very short time they can win already the server too easily.
Easy. Limit size of kingdom - even if you limit it to 100 people, most of premades would manage to get into that.
Old travian (i think Legends now? idk how its called now) had limit of 60 players per alliance if i remember right. Kingdoms are more society-oriented, so 80/100 should work well