2016's Suicide Squad, while a commercial hit, was not met with the critical success that DC had hoped the film would attain. Fans of the property disliked the uneven pacing, tonal issues (stemming from a trailer house cutting the film instead of the director, David Ayer, resulting in many deleted scenes), and the numerous plot holes concerning logistical issues. But certain elements could have been far worse. Had the film adapted Suicide Squad #5, written by John Ostrander with art by Luke McDonnell and Bob Lewis and colors by Carl Gafford, fans would have left the theater stunned as to the Squad's primary method of stopping the Enchantress.
The Enchantress, appearing early in John Ostrander's run, is frequently one of the most powerful villains on the Squad. Armed with a variety of magic-based powers, including the ability to fly, manipulate others and even copy appearances, the Enchantress is a veritable wild card who isn't easily controlled. Turning her back into June Moone, her alter eg0/split personality is the only surefire method to reign in the Enchantress - but when the Enchantress refuses to leave, other - slightly more crude - methods are needed.
In the previous issue in the series, the Suicide Squad undertakes a dangerous mission to the Soviet Union to retrieve a Russian dissident and extract her safely to the United States. Unfortunately, the mission goes terribly wrong - the target never actually wanted to travel to the US, preferring to do her work in her home country and become a martyr if she must. The Enchantress laughs maniacally and soars into the air, causing leader Rick Flag to declare the Enchantress has gone out of control and must be dealt with. Deadshot subsequently shoots her in the head.
Deadshot didn't actually kill the Enchantress - he just "winged" her, causing her to fall - but this is an incredibly mundane method to control the most powerful member of the Suicide Squad. In the 2016 film, Amanda Waller controls the Enchantress through a briefcase in which her heart is stored, and threatens to destroy the heart if she grows beyond her control (she actually does stab the heart later on, but the attempt to kill the Enchantress fails). Attacking one's heart is hardly an otherworldly method for defeating a villain - she has the same weakness as all humans, after all - but simply shooting her certainly takes the wind out of her sails.
The Enchantress would only grow in power as the series continued. Thus, this method of controlling the sorcerer fell out of favor quickly. Nevertheless, when it comes to the first Suicide Squad film, Enchantress could have been defeated in an incredibly anti-climatic fashion.