Yes and no.
yes: narvia and turosh are really weak even if they become inspired, and you can not bring them back to life.
they are fast, but as resilient as a piece of paper
no: with Vortemis we have access to spells. thanks to the last two warband packs and echoes of glory there are some interesting ones like Abasoth's Unmaking, Abasoth's Withering, Infinite Riches (forFaneway Crystal) and, only for us, Wracking Change (combo with Power Surge for 3 direct damage).
turning blue horror into our primary weapon is certainly interesting, but in my mind this model is more useful as a disturbing element and / or objective grabber. the most interesting thing about blue horror, in my opinion, is that when it changes into the brimstone due to an attack it can not be driven back. this makes him a perfect candidate to conquer objectives in the opponent's field (I have always evoked him in the opponent's field as he forces the opponent to divide the warband = easy Divide and Conquer) and allow easy access to score Supremacy and / or Making a Statement (with Abasoth's Unmaking).
making it even a weapon is easy with cards like Gloryseeker, but I prefer to use it as a key model for objectives like Supremacy, Bind the City / our only way out, Eyes Of The Master, Divide and Conquer, Extreme Flank, Keep Them Guessing, Alone in the dark, Skirting Danger, Loner..).
my deck is not an objective deck, it's a "Board Control Deck).