Plots and killing should be more expansive. Especially killing your own children. In CK2 you coulnt kill your own children direcly and logical reason would be how your associates would think about you if you killing your own children. But anyway even in CK2 you could find a way to kill your children. Make a councillor and send him to plauge invested province. Or rise i raiding troops and get him to lose fight and get killed or captured. In CK3 there should be more passive ways to kill characters. Like give some suicide mission and more ways to passive kill to not get caught. realy didnt like that plotpower and waiting system to plot trigger would want more control and decision makeing.