By now, you must have heard that Fantastic Four didn't just flop in the US, but also across the world, with the studio set to lose about $60 million by the end of the cinematographic run. And, despite the rumors, you must have also heard that Fox still wants make Fantastic Four movies.
So what did we learn from all of this debacle? What can the studio do in order to avoid failing yet again? Well, for starters, they can forget about presenting yet another origin story, if they intend to reboot yet again the series, because we already know who these characters are.
Then, they can take a closer look to these following storylines, as a source of inspiration (because we already know that the studio will become creative at a moment or another).
The Galactus Trilogy

Sure enough, Fox attempted to bring both Galactus and Silver Surfer in 2007's Fantastic Four film. But it wasn't at all what the fans expected. Though the film doubled its budget worldwide, it could have been much better (way better) than what was presented to us.
The Galactus Trilogy was released way back in 1966 and is still one of the better Fantastic Four stories. Of course, the trilogy can be presented in a single movie, with a beginning also introducing the Skrulls and the Watcher, a middle in which the Silver Surfer changes allegiances, and a fitting end in which Galactus is not necessarily defeated, but convinced to leave Earth alone.
Thus, a continuation can follow, with a bigger threat can emerge in a potential sequel, in the form of Abraxas. The sequel might as well be an adaptation of Resurrection of Galactus.
Or, maybe, a sequel can be the adaptation of The Trial of Galactus.
On the next page, a death!

