You could do some favorite character guest stars: Tempus, Inspector Henderson, Dr. Klein, Zara, Tez, Nor, Ching (both), Trask, Ellen (both), Sam Lane (both), Lucy Lane (both), Metallo, Resplendent Man, Deathstroke, Jack Olsen, Randy Goode (Dirt Digger Publisher), Samantha (from SLV), HG Wells, Ralph, Cloned-Lois, Vatman, Wanda Detroit, etc. Sometimes, people like Avatars that represent other characters. I can understand why you'd focus on Lois and Clark, though.
