1. Not giving the open-pvp players the option to go to a PvP server and forcing them to go to a PvE server is just going to piss them off and make them quit. So what dilution are you talking about when players ragequit?
2. What server community are you talking about when there is already none? What is the difference between a server community that is physically a merger of 3 former servers vs 3 servers sharing the same community? Doesn't make sense.
Can't comprehend how wrong you are, MDN players as a ridiculously huge majority will happily merge with a PVE server.