I think one solution might be just to put a limit to placeable structures. Not a limit for player, a limit for tribe since in Official server there are huge tribes. Ark to be completed doesn't require a huge base, just a normal one and a breeding area. You don't need anything else. It's sad that Official server are blocked with pillars from tribes that don't play anymore. They just enter to full troughs, reset the decaying timer and then they leave for another 2 weeks or more.