Wouldn't it be a great idea to be able to be invaded by a player or players like in Dark Souls or to be able to invade the island of other players to take their resources instead of farming, basically to give a pk loot aspect.

And that you can build your island with all your guild, your friends and that you can create defensive npc to protect your island during your absence or give you enough time to counter attack.

To be able to build a castle with several floors and guards, or even mobs would give life to the island.

This is so my dream I know it will probably never happen but I really wish it...