Bringing the Flash back would be great. He was a very cool character, who actually had a decent superpower, unlike the terrible Aquaman. If I was an evil genius and had Aquaman as my enemy, I'd just do all my evil bidding in the middle of the desert. No water, no danger from AquaMan. Yay!!!
"One must be a fox in order to recognize traps, and a lion to frighten off wolves."