On my Quest to seek out new games, I've been playing Star Dynasties. It's basically crusader kings in space, but more oriented around the character-based Dallas-esque aspect of that game, if that tells you anything. It brings also quite a bit of improvement to the Crusader Kings formula, from little UI improvements like making names and places in pop up windows hyperlinked texts you can click to be directly lead to them, to giving you sort of a "todo list" to the more interesting actions you can take, sorted in categories like "inner politics" "outer politics" etc.
It has it's bugs and balance issues but feels generally like a polished CK. There's not as much content as CK has though and you've seen everything the game has to offer in a few hours. Contrary to CK it's also turn based which is seemingly disliked by the normies if you read the steam reviews but in my opinion makes infinitely more sense than what paradox is doing in it's strategy games. (The semi-realtime makes kind of sense for HoI and used to be something special paradox did way back when everything else was turn based, it in my opinion just doesn't make sense for games at the scale of e.g. Stellaris or CK, especially not at the resolutions they run it at) When you finish a turn, the game shows you the important events that happened around the place (configurable via filter) so you know what's going on in the universe.
Star Dynasties has kind of a honor system where some actions break the societies' rules and affect honor negatively and having negative honor basically makes everyone dislike you. Sometimes it's worth it but it's a balancing act. When a character did something rule-breaking (e.g. assassination) to another house, it gives that house justification (no or lessened honor impact) to do something normally considered rule-breaking back, like going to war. You can also "bring justice" to your vassals or nobles in your influence or ask your liege to bring justice for things done against you or your vassals, which can lead to very complicated but limited personal vendettas and is much better and more interesting than what CK does.
It also has a "secrets" system, where for example if you sabotage an enemy star port (or make it look like an enemy has sabotaged yours to gain a reason to go to war) it creates a "secret" involved characters will know about and other houses can find out about and use against you for several turns, which is a cool mechanic compared to the more binary you get/don't get discovered on event thing CK usually does. Some secrets are harder to find out about than others. It's interesting because it changes things depending on who might or might not find out about a particular secret. You can also play a ruler that has his spy networks everywhere and knows the dirty laundry of other rulers even if not directly involved in their business, which means you can sabotage and topple a houses reputation without even directly interacting with them.
What's also interesting is that you don't just automatically know every noble there is and actually have to have a closer direct relation to them for them to pop up for you. Something CK really, really would need. There's also a soft limit of family members a house is allowed to have connected to it's wealth and as ruler you can forbid/allow people to have children. You also have to actively try for a kid, they don't just happen. This is of course mostly a game balancing thing they introduced but it is reasonably built into the lore.
The game also does something I like but others don't by abstracting away fleet and combat into pure numbers. There's no fleet movement on the map, no little ships you have to move around which also means no braindead AI getting stuck doing dumb things or AI being generally poor at war. Combat happens in deceicive battles around star systems with a specific commander you pick. When you attack you can ask other nobles (algined and non-aligned) to join in and so can the defender. Combat itself is sort of a rock-paper-scissors kind of deal with different battle tactics different leaders know. It'd make the post too long to explain it all but it's quite interesting. I'm also really not a fan of moving fleets/armies around. Abstraction is sometimes actually good, especially when it helps the AI which it really does.
All in all, interesting game but lacking content right now. I hope they expand upon it.