Why can't you make an auto-marriage? For example, vassals' children can be ticked off to allow marriage, so why can't everyone immediately tick this box? And they themselves will choose whom to marry

Is it possible to add options to set age range for the notification? I do courtier breeding program and I hate it when <16 and >45 courtiers clutter the notification.

I can edit the current action file to set age range to >16 and <45 myself, but it would be turned back in the next update and I believe people might also like this option.

any_child = { count < x is_alive = yes } might also be another interesting option to add to.