Here is the evolution of my first subscriber build:
I watched your videos with this deck, and it just seems like you have no way to deal with something like BSA or Inferno Titan outside of racing them, which would only happen if you got a god hand and they stalled on mana. I've played a similar deck, and 4x Act of Treason are better than 4x Goblin Shortcutter, in my opinion (or better than 2x Muse, and 2x Shortcutter, more realistically). Act of Treason would only act as removal some of the time, but the point is to push damage through quickly, and it definitely serves that purpose better than Shortcutters. The fact that it also potentially acts as removal is a huge plus. You trade off a Raid Bombardment trigger and a body, but it seems worth it to me, particularly since the deck isn't (or shouldn't be) winning really at all right now.
In all of your games in the videos you posted, you should have won very few of them assuming skilled opponents, and I think the reason is big creatures that your deck was incapable of dealing with. Or sometimes small creatures like Paragon of Fierce Defiance when you don't draw one of 3 cards that potentially act as removal. Drawing Act of Treason, even without Blasting Station, would have turned that Paragon game from a game you should have lost into a game you easily should have won instead.
I think HenWen's route with Jund Blasting Station is better than the Raid Bombardment route though. Red-White seems like a better place for Raid Bombardment to me, given white's ability to vomit out tokens much more quickly than with Jund.