First, congrats to the winner with the Inzektor deck, good meta call. I'm glad mermails didn't win the event. What is important from this event is that there is no Geargia deck in top 8, nor is there a Chaos Dragon deck, that's something that needs to be underlined.
Now about the Threatening Roar. This is not a new tech, this is a tech from last format. The tech was used by Billy Brake in the Nationals as well as other YCS. The reason people don't know that is cause Inzektorz never did anything on big events. Now, since the deck is not as popular as it was before the deck can top, even win a ycs, as we saw. But please, do not say that Threatening Roar is a new tech, it's not.
Here is the deck Billy Brake used at the NAWCQ - http://articles.alterealitygames.com/?p=13712
And here is an article he wrote on Threatening Roar - http://articles.alterealitygames.com/?p=13146
Again, for the last time, Threatening Roar is not a new tech, his deck is not special by any kind, what he did is called - a good, no... Great Meta Call.