Good question, we need find a way to territory no affect the control of a mercenary camp, only capturing placing buildings near like some neutral buildings in AOM , but can be nice restrict CC to avoid build to nearly. This feature will be one of last, when we talk about that we agreed with this because, they need some artist intervention for some units these aren't in game, but historical were mercenaries like Tarantine cavalry, or Illyrians mercenaries.