ARK: Survival Evolved PvP is being transitioned from internal feuds, to external; server versus server, instead of focusing on inter-server discord. It's not a far cry from what most of you are accustom to, though it does require cooperation within a server to defend against outsiders. Ultimately, players will have to disregard domestic grudges during the event of an invasion, and work together.
However, I do agree that certain (excessive) crowds will be problematic within this new system. They were a headache before transfers were enabled, and now the entire playground is open to them.
Good luck.