There's a point to be made about how Broadcast makes Jack Slash a better slasher villain in particular. Appearing from around corners at the least opportune moments, always managing to survive things that really should have killed him, coming back for rounds two and three and four and five. And looking at the slasher movie pipeline makes it even more blatant - how many Scream movies are we on now? As long as Ghostface keeps producing this much conflict, the shards are never gonna let him get killed off.
There's a broader idea that all of the Slaughterhouse members represent a broader kind of horror movie villain, hence why they posed such a smaller threat during the S9K arc - it wasn't Alien anymore, it was Alien vs. Predator, and the same characters which proved arc-defining threats in the beginning got mowed down by the dozens during S9K, just due to the genre shift.
Likewise, Jack cementing himself as no longer the leader of a band of murderers, but as the head of a small army of capes put him in a position where he could actually die. Killing Mike Meyers as he skulks around your house is practically impossible, but killing the leader of an evil army is par for the course - and with Theo going through a whole arc leading up to his fight with Jack, it became an inevitability.
I think this is one of the things that makes the Black Knight so interesting to me - it's established that Broadcast is maximally effective at working within its genre: strolling in, hunting down isolated targets and being able to survive the fallout when it all comes crashing down - and squaring that with someone who has actual goals and limitations to work within outside of just blowing everything up and running away is very interesting. How would Jack Slash work with teammates he can't just push in front of a blow aimed at him? How does Broadcast keep him alive when "create a crisis and escape in the chaos" stops being an option? How will he work closely enough within his idiom for Broadcast to keep him pushing through without leaning into it too hard and having the heroes drop the hammer on him?
Crucially, going too big and getting killed by the rules of the new genre he's forced himself into is an inevitability without a colossal shift to his characterization. While Bonesaw grew as a person, allowing her to escape her horror movie idiom into the recovering abuse victim Riley, with all the narrative possibilities that come with that, and Harbinger escaped his into the aggressively anti-kayfabe Number Man (and died an appropriately mundane death for it in Ward), an inability to conceptualize himself as having the ability to do anything differently is key to Jack's character. Even as the Black Knight, he'd be spurred on by a desire to mark himself into history, go too big (with knowledge of his power, he might try to fight an endbringer, or reveal Eden), and get swatted like a bug for trying to force himself into a type of story where Mike Meyers isn't fated to live forever.


















