LichTale
Recruit
It's kind of funny but mods tend to be able to solve that "too complex" problem, I remember a mod that did let me send assassins to kill nobles and a lot more intrigue.Assassinations won't be in the game, I asked Duh about it half a year ago.
The points you mentioned are the part of the "Too complex" problem. Developers are so afraid of adding a bit of complexity in the game, so it looks too shallow right now.
To be fair I trust more in the mods compared to the developers about game mechanics and interesting stuff.