Excellent read. Unfortunately, I've gotten to the same point as when a season on the tele ends and leaves you salivating for the as yet unannounced new season to carry on the plot.
This and the accompanying off-shoot series have added depth to the Earthcent saga. In some ways, and with the aging of the lead characters of Ambassador McCallister et. al. and the looming retirement of EarthCent as subsumed by the new Earth Empire seem to embody a shift in the importance of the later spin-offs. However, the long days of EarthCent tales on Stryx stations are not vanishing. More and more, the locales of the growing "empire" make valued appearances, cross-linking the novel du jour.