i would like to start a discussion about the combination of server merges and migration.
if the team figures out a good merging strategy and each kingdom starts with a similar power,
i would strongly suggest to disable the migration feature for the new realm.
it depends a bit on the end-game strategy: in case there will be merges every fixed period of time (e.g. 1 per month), i would disable migration completely, otherwise i would disable it for the first x weeks.
otherwise it will very quickly change into 2 kingdoms fighting each other and the rest gets abandoned.