The current ruler of my dynasty is a bit of an idiot. His heir shows much more promise; is there a way to get rid of my current ruler?
ways I do that (legally):
- Really mistreat someone (like your wife), hopefully they'll start a plot to kill you.
- Put yourself in every battle you do, try to lose them ;)
In a more 'cheaty' way, you probably can load the game as one of your counts/dukes and select the plot to kill the liege :) then go back to yourself and wait until they succeed
One of the most reliable ways is to try and assassinate someone with very high intrigue. They will discover your assassin, and then they are very likely to send an assassin after you. If they fail, or don't send an assassin, just try again. Conveniently, after you die the reputation hit from assassinations disappear.
Another way to get your heir on the throne is for your current character to be forced to give up the throne as a result of surrendering in an excommunication war or a war to dispose of a tyrannical liege.
In the case of the latter here are some ways to get your vassals motivated to stand up against your rule:
- revoke their titles
- imprison them
- execute said prisoners
I'm not sure what the odds are they won't start a war for independence as opposed to a war to depose of their liege, but if your current ruler is a bit of a douche to start with it's another in-character way to get what you're after.