Wolfman and Kane provide an epilogue of sorts to the Forgotten Heroes story in Action 554 (April 1984).
The story is set on an alien world that kind of resembles Earth, although it is under the domination of some scary other aliens. Two young boys, named Joe and Jerry, very loosely based on Siegel and Shuster, conceive of a noble and powerful hero that could save them from the alien overlords.
They design Superman, and then devote their energies to believing in their created hero.
This belief is enough to pull Superman from the void he vanished into in the previous issue. He defeats the aliens, and then heads back to Earth. The story is dedicated to Siegel and Shuster.
A lot of people really liked this story. It was ok.