First of all thank you for this game. Me and my wife love it with hearts.
Please think about adding more time events on the map such as Purge but much offten and to all players on the server. This may be some tribe wars or camp defence. This feature could be also a first step to faction system in the future witch will allow your clan to make union with different tribes.
Any way this time events potentially could generate much more action on server.
Sorry for my English and thank you)