Ideas I'm working on, all subject to change:
• 𝔹𝕖𝕔𝕠𝕞𝕖 𝕓𝕖𝕝𝕠𝕧𝕖𝕕 𝕣𝕦𝕝𝕖𝕣 — both have all vassals have positive opinion and reduce revolt risk in realm
• ℂ𝕠𝕟𝕤𝕠𝕝𝕚𝕕𝕒𝕥𝕖 ℙ𝕠𝕨𝕖𝕣 — complete a 3 of 5 tasks related to weakening powerful vassals, gives you an increase to plot power but a reduction in vassals opinion and plot defense. Available only for rulers with particularly ruthless traits.
• 𝕎𝕖𝕒𝕜𝕖𝕟 𝕃𝕚𝕖𝕘𝕖 — increase your military strength relative to your liege, and otherwise sabotage your realm. Yes, your vassals will take this one too 😏
• 𝕌𝕟𝕕𝕖𝕣𝕘𝕠 𝕃𝕖𝕘𝕒𝕝 ℝ𝕖𝕗𝕠𝕣𝕞𝕤 — pass 5 laws. Gives large boost to legalism tech