I agree, especially because the Kraken DOES have a second set of minions to summon in that fight that are generic Black Ring henchmen. Not to forget to mention that one of them is a far more interesting character than any of the big baddies; 'Undead Black Ring Flameweaver', who is actually just a completely normal dude and not undead at all but he just pretends he is. (I'm hoping for an Expansion pack or mini-campaign to explain what his deal is. Where did he come from? Why does he use illusory magic to make it seem like he's undead? Is his relationship to the Kraken professional or intimate?)
Considering that destroying souls is a pretty large ethical and mechanical consideration in the game this seems like a polish thing that should be included one day.