Imperial Reincarnation v3 remains an intriguing series, much plotting and strategizing behind the scenes, and in a way that feels believable. Merely being crowned doesn't make you a true emperor, and becoming a true emperor means preparing for a battle both literal and at court. The story remains an uncommon kind of story for light novels, let alone isekai. Not often that being a powerful spellcaster will not save the day. Still, it would be somewhat better with less information dumps and a bit more speed to the plot.