@SimLibby oh my gosh yes you have no idea! Comparing to German for instance the grammar of Dutch is so much easier, there's barely any exceptions of rules (if there are rules at all)! I mean, look at the conjugation of adjectives for example :D And it's quite easy to read too, because of my wide knowledge of similar languages (English helps a bit too). The only difficulties I have are with listening comprehensions...
But I'm going off topic now.
The children should be able to be heirs also if you import a sim to next kingdom and must therefore choose a new hero sim, but they can't be even that anymore :( and I recall playing the quest you mentioned, where you kill the Monarch, and that was like last year or something. And even though my Monarch had a child, I couldn't choose the child as the next Monarch :/ Because I know that was possible earlier. Oh well. Stupid EA.