Cambridge is a bit smaller than the most house systems, however the layout makes it barely noticeable. Cambridge would be more interesting if Bristol was in the orbit of Planet Cambridge, and the Poole lane adjacent to Cambridge as well. Right now, all the traders move over the Cardiff Lane between Omega-3 and New London, so they both avoid Torshavn's range and Planet Cambridge itself. This is sad and wasted potential. There is also an empty asteroid field next to Cambridge, which is literally just there. No base, no objects, no jump hole, not even a wreck. If that field would switch places with the Poole lane, that would be way better. Keswick and Grasmere are pretty okay Barrier clouds, having a good amount of bigger asteroids placed in there. That's what I like.
But could you please not place the Nomad Irra in Rho directly on the plane where it can be found instantly? It shouldn't be just there in open space but be somewhat hidden (like, uhm, there are plenty of giant rocks in Rho) and maybe not on the plane. The Core might be less dumb than Lyth makes them look like by getting banned every now and then.
While I really, really hate that the stupid idea of Gallia magically knowing about the Cortez jump hole in Magellan and not going to the unprotected Magellan/California connection to prevent Liberty from entering Magellan or rebuilding San Diego - so that Gallia might finally end up with ZoI in California, which is what all parties demand for a long time now - at least the battleship was put off-plane. That's good.