Specifically Theon as its heir.

But like, they haven't even bothered to kill off Balon? That's indeed as easy as Davos telling Stannis what he's heard. And at this point, Stannis would be one of the few people it would apply to. Shoot, it would further show him that Mel's magic "works."

But yeah, no Balon since season 3 finale. No Asha/Yara since that one ep in Season 4.