I think every AI character landed or not should have short and long term goals towrds they are working for. Short term goals should change on circumstances and evry ai character should evalute they action on thouse goals.
Example, AI lords wishes to attack slightly stronger neightbour, hes aim is to be stronger, to get stronger there is multible brances, build buildings repair vassal opinion or marry his daughter to other king and get help in war. As his one goal is compleated his goals change towards to longterm goals what they need to do next.
Also courtiers should have same system where they wish to archive something, like getting lands or marry powerful family or getting better job. And so they work and plot towards thouse goals. This could give more continuus action, so lord who dosent like you becouse your traits or action will not straight away try to betray you but rather seek how they can exploit it.
Example, AI lords wishes to attack slightly stronger neightbour, hes aim is to be stronger, to get stronger there is multible brances, build buildings repair vassal opinion or marry his daughter to other king and get help in war. As his one goal is compleated his goals change towards to longterm goals what they need to do next.
Also courtiers should have same system where they wish to archive something, like getting lands or marry powerful family or getting better job. And so they work and plot towards thouse goals. This could give more continuus action, so lord who dosent like you becouse your traits or action will not straight away try to betray you but rather seek how they can exploit it.