I am hoping that by the sixth issue, we'll get an idea of why Tony/The Plutonian went crazy. As well as trying to find a way to stop him, that's what all the heroes want to know.
Grant Morrison,in an afterward to the first issue, said it was like if Superman just looked into the Zone-a-Phone (which allows communication with the prisoners in the Phantom Zone) and all the angry, disembodied voices just got to him.