Whuile playing a recent game of EU, I realized that RMs are too rigid in EU1, and were probably not taken as seriously as it could. While not asking for a complete family tree model, having the RMs a random length (from 5 years to 50 years, for example) would add a touch of mor realism to the game (its incredibly unrealistic when three princesses married to countries scattered all over Europe suddenly die at the same time). Furthermore, RM should also have extra effects. Stepping up the stab penalty for DoW on a naino you have a RM with would be a first step. RMs should also have a impact on conclusion of war peace treaties, if large ones lie Westphalia are going to be in, stuff that majorly redraws the maps of Europe and royal lines.