Gotta agree. It was a good concept and I think Stern in particular would have had fun going over the mechanics of how black suit Superman appeared during "Reign" and how he could have easily been another impostor.
Triangle Era is “my” Superman, and I think most of it still holds up really well 30 years later… but not Dead Again. Having lingering doubt that Superman returned from the dead was a solid premise, but this is where the absence of Ordway and Stern really started to be felt in the pacing of the plot.