There's only going to be one planet the Catastrophists would want to see fires rekindled on.

Look up Apokalips.

[It's locked down pretty heavily and has enough military force surrounding it to decimate solar systems without slowing down, but...]

There's got to be another connection. The Catastrophists were shattered after the last time. There's no way a cult like that could gather the numbers to challenge the Apokalips Garrison in just a few years. The Armaghetto alone has more Daxamites in it than almost any other planet short of Daxam itself.