In the 2150s, there has been some recent change already: as per "Judgment", the Warrior Caste has become more powerful and the other castes or professions have become less. Since Kolos paints this as the big thing in the past twenty years, the balance of Houses vs. Imperial Seat probably hasn't changed in that time. Doesn't mean it wouldn't become the next big change soon thereafter, though.
Timo Saloniemi
Timo Saloniemi