For an actual response, I like this system except for the edge case systems.
Orkney in the case of Gallia.
Poole for Bretonia.
Dresden for Rheinland.
Pennsylvania for Liberty.
Tottori for Kusari (maybe?).
These are systems that are heavily controlled by the main house with gates, stations, and tradelanes in each. Some have heavier unlawful presence in them like with Tottori, Poole, and Dresden, but they are still heavily in the house's favour for who controls the most space. I feel like they should be added to their respected houses, possibly removed later on if story develops to throw the political power hold in the future.