A great map, with a lovely choice of colours, great icons, nice landshape.
As for the feeling of the precarious balance of forces: if I'm reading the map in the right sense, you're depicting areas of influence of the main houses, so for example, you may say that Ettarna is maily under the influence of House Valdrid. It would also be great if you might tell who is acting, like "House Danici is Sabotaging House Cappadova in Aguirra"; a little bit of who's acting-where-why wouldn't hurt in an already great map.