The problem with the so called PvP in this game is that it is stripped of every single actual pvp element.
You cannot actively defend the colony, you cannot reclaim it once its taken away from you, you have no control over who you attack. I wouldnt be surprised if you were able to attack the colonies of your guildmates.
The core of the feature either misses the elements that make it pvp or has them watered down to a level where colonies are just alternate adventures that cannot compete with regular ones. Without a major overhaul of the fundamental mechanics of the game I really dont see how this could be changed.