Suicide Squad and a spiritual sequel to the 2016 movie. It will take the best elements from the original, like Margot Robbie's Harley Quinn and Viola Davis' Amanda Waller, and incorporate them in a film that thankfully isn't riddled with corporate meddling. Black Adam also has its roots in the original plans for the DCEU, but it will introduce Dwayne Johnson's antihero as a more prominent figure than originally planned, due to the absence of key characters like Ben Affleck's Batman and possibly Henry Cavill's Superman.
In the comics, Black Adam ed forces with the Suicide Squad to battle the sorceress Circe during the "War of the Gods" comic crossover event. Black Adam's anti-hero nature helped him fit perfectly in the team. However, since the Egyptian powerhouse tends to have bigger objectives than those of Amanda Waller and her group, his godly abilities and fiery temperament put the Squad at risk and prevented him from being a full-time member. Nevertheless, Black Adam is open to forces with them if their goals align.
When Gavin O'Connor was attached to direct the Suicide Squad sequel, Dwayne Johnson's Black Adam was set to appear in an antagonist role. After the original script went through numerous changes, The Suicide Squad transformed into a soft-reboot with a heavy comedic tone, while Black Adam was confirmed to have his own solo movie sometime in the future. But with enough time, the surviving of the Suicide Squad could forge an alliance with Black Adam to either save the world or fight a common threat. This coalition could arrive as early as Shazam 3, where Task Force X could help Black Adam balance the fight against Billy Batson (Asher Angel/Zachary Levi) and take down the whole Shazam Family.
The villainous team-up would help fix the DCEU's tone and continuity. Batman v Superman: Dawn of Justice.
It's safe to say Zack Snyder's mature style in the next installments of the DCEU and give the franchise a fresh start without rebooting it altogether.
