i think coding that is almost impossible. Another option could be to autoclean olympia or even all deamons in the center cities every 12 or 24 hours, as otherwise people still will drop in Jackdun etc to get merrits for dropped deamons. Or let 50% return home from center every 12 or 24 hours. So they dont just loose them after a big fight. That way also weaker kingdoms still have a small chance to get the impedentia rewards when its olympia.