Superman Returns didn’t do so well in the box office and it took a reboot to bring the Man of Steel back to life (foreshadowing!) But director Bryan Singer had a whole idea for its sequel as Bullets & Blockbusters explained in his video.
I personally enjoyed Superman Returns and the script for the sequel sounded alright. Shame Singer was such a shitty person and seemed to change his direction based on whatever was happening at the time. But mainly the shitty person part.