Personally I think the game is too young to have a third server.
This game is still in its infancy and not fully featured - for example the TAMBO is still not featured.
It would have been better if some major updates had been done and then a third server introduced.
Having a 3rd server now will only dilute the two existing servers.
It would be good to know a time frame for any of what has been posted by M0H0 in his post Tentlan updates and if any of those changes were imminent then starting a thrid server is a bit understandeble.
Personally, I would have hope that Tribe numbers are limited on the thrid server and that the TAMOB is featured and players are NOT allowed to 'donate' troops to another player and then have them sent back.