... Hmm.
@Shadlith, what are Cauldron, the Clock Tower and Church up to?
Cauldron might not have even formed, since originally it was caused by Eden's death and put together to oppose Scion, but with the TSAB, Clock Tower and Church all doing their big-organization thing it would make sense for a group of parahumans to put together a Cauldron analogue for their own interests. Also, there's no reason this "Cauldron" couldn't have found the Thinker's remains after the Beast was done with it and did the whole selling-powers thing. Especially if the PtV shard was lost near the end and attached to some young girl.
... Also, the thought amuses me greatly that all these high-tier agencies are working around each-other trying to get Earth back on it's feet.
As for the Church and Clock Tower... wasn't a big part of their entire existence the act of keeping Magecraft secret? Now that that particular secret is... not, what are they even
doing? I can't see them disbanding just because their original reason to exist is gone. The people in charge like being in charge too much.
The TSAB can bring a truly horrific amount of power to bear, but they need to spread that power out across all their Member worlds and outposts, so they probably have about parity in terms of local power and capability as the other three.
"Cauldron" would be kind of weird, because of the four Supernatural Powers they're the only ones who have little to no standardization. There's no Magecraft to learn or Devices with pre-loaded spells, just whatever each parahuman can bring to bear. Tinkers could help with that, but they can almost never mass-produce their stuff.
... And of course the Incubators of PMMM are just completely decentralized and have no need of any kind of local agency.