I liked the season premiere.
But you know what? (And I offer this without legal claim because it's just an idea.)
I'd like them to do an episode that presents the Cyborg Superman as an actual character and explains the name "Cyborg Superman." Essentially, they'd do bits from the last couple of years, mostly from Hank Henshaw's viewpoint, and actually put some meat on him, some complexity.
Which of course makes me think about running the occasional villain-centric episode of an RPG campaign, rather like the JLU episode "Task Force X."