How do you make the fourth 21st-century “Fantastic Four” installment a must-see event? You emphasize everything that it’ll deliver that its predecessors couldn’t. “The Fantastic Four: First Steps” arrived in theaters with a marketing campaign and hype machine evoking past comic book movies like “Deadpool” and 2018’s “Venom.” Like the promotional materials for those two late 2010s superhero features, “First Step’s” advertising kept showing off visuals, action beats, or costumes (among other elements) that directly addressed complaints fans had of previous adaptations of these characters. Deadpool would finally snark. Venom would finally have his long tongue — and the Fantastic Four would, finally, be a family. Constant teases of Galactus’ power, his immense scale, and humanoid form also promised reparations for fans still stinging from the cloudy version introduced in 2007’s “Fantastic Four: Rise of the Silver Surfer.” Meanwhile, the constant presence of cosmic material in the trailers and commercials offered something distinctly different from director Tim Story’s “Fantastic Four” installments, films that kept things strictly grounded on Earth. These details weren’t just important in drawing in comic book geeks. They also reassured general moviegoers, unaware of the Fantastic Four’s comics history, that this wouldn’t be a rehash of Josh Trank’s 2015 directorial effort. There had never been a Fantastic Four movie adaptation with such a vibrant, colorful scheme or a ’60s aesthetic. This was something new, not just the same old, same old. That’s how you make the fourth 21st-century “Fantastic Four” feature lucrative.