Very innovative sf set some hundreds of years in the future in a ravaged Solar System loose polity called the Heliosphere where immortal (sort of at least) "Landlords" (one for each planetary in-well more or less), try and keep civilization going under the Accords that (sort of) bind them; unfortunately one of them, the mysterious Arcna of the farthest reaches, now supposedly residing in mysterious Noqumiut a fabled, Shangri-La paradise (at least in the beliefs of the millions of her followers) in the Kuiper Belt, is truly mad and every century or so starts preaching about the remaking of the polity to be just, a paradise for everyone, a fulfillment of humanity potential and all the usual propaganda bs, etc etc though, of course, these ravings, called Propagations, that overwhelm the censorship of the Landlords and are widely broadcasted everywhere through mysterious means, only lead to immense violence and bloodshed (not that the other Landlords are much saner though, but their madness lacks the grandiose megalomania of Arcna); after some 70 years of (more or less) peace another Propagation seems on the horizon, though this one may turn even deadlier...
With a lot of jargon that is sometimes difficult to follow and breaks the narrative flow and quite claustrophobic on occasion, the novel is still very innovative with an original setting and interesting characters - Caleb Ross, the Landlord of Mars, a former sergeant who reincarnates at 24 every time he dies with little memories of his previous lives, Ambera Chen aka "Tharsis" from her middle of nowhere homestead, a young lieutenant in the Arran (the Martian civilization) army who gets entangled by chance in all and through whose eyes we travel from one end of the Heliosphere to another, major Lanin, a dutiful Arran officer, the previous commander of Tharsis and of the newly reincarnated Landlord, tDaer, the newest incarnation of the genetic Daer line of Iapetus, a young idealistic researcher who is willing to skirt the Accords and defy the Landlords to show humanity the way towards the paradise promised by Arcna, a Jovian princeling in for money and power, another Jovian but a fanatic follower of Arcna's teaching and of course various other Landlords who interact with the main characters in colorful locations throughout the Heliosphere.
With an ending that is partly a cliffhanger, and partly a resolution of the main plot, The Lighthouse of Kuiper is worth persevering through, ignoring the jargon when necessary as most of it becomes clearer as the novel progresses as it is packed with interesting ideas, world-building characters, past history and of course adventure, fights, tragedy, and even a little romance.
Highly recommended and hopefully the immediate sequel The Ariums of Earth will be as good as this one