Just recently started (with just one noble), and was wondering about this. Your post implies that it's not kosher to have two nobles in the same realm?
I think it's simply no longer possible to have more than one active character per continent, right? So it's not really about being kosher, you just can't do it even if you wanted to. Except for adventurers.
Which, for most the the game's time, wasn't the case.
