Considering that they work on the Highlander principle it seems strange that there isn’t more of a conflict between them going on. Has there ever been any kind of fighting in recorded history?
In either case it got my mind racing think about a potential storyline where the Sons of Svanir found out about how killing one Elder Dragon essentially powers up the others, so they mount a flat-out war against one of the remaining ones in order to “feed” Jormag by killing it.
Since the Sons technically are not “pure” minions of Jormag but are somewhat autonomous this really wouldn’t be one Dragon declaring war on another, so it wouldn’t violate whatever “non-aggression pact” that possibly exists between them.
Please Anet give us a hide Chest Armour-option. Tattoo-clad Norns everywhere beg of you.