Yea... I've been on Behemoth. It's always as dead as the other servers. Unless you have people that are roleplaying, the only cities that you'll find people are usually either Limsa Lominsa or any of the "endgame" areas like Mor Dhona or Idyllshire. Of course, once people finish a game, they're either in the endgame city or in the housing wards. You rarely ever see anyone anywhere. Though perhaps with all these server transfers, you might start seeing people in other places again...