The following contains spoilers for Immoral X-Men #2, now on sale from Marvel Comics.
The entire Sins of Sinister storyline has been a deep dive into a dark timeline, where the Marvel Universe has been shifted irrevocably towards a darker center. Following the corruption of the X-Men by Mister Sinister's genetic tampering, the mutant heroes were able to eliminate most other Marvel heroes within a decade, quickly taking control of the world. In the ensuing century, that mutant empire expanded across the greater cosmos.
The now villainous X-Men are effectively using Sinister's technology to make world-breaking weapons of mass destruction as they spread their influence across the universe. But in a particularly dark twist, the latest developments also imagine the X-Men's most twisted future as a grim reflection of another popular property. Immoral X-Men #2 (by Kieron Gillen, Andrea Di Vito, Jim Charalampidis, and VC's Clayton Cowles) reveals that the future of the Sins of Sinister X-Men effectively sets up a mutant-centric take on Star Trek, utilizing many of the same concepts but in a darker light.
The X-Men's 'Sins of Sinister' is a Dark Inversion of Star Trek
In the universe of Star Trek, the United Federation of Planets is a collection of allied worlds and cultures, united under the banner of peace and expansion, even as the Earth continues to flourish. They send their forces out into the vastness of space to encounter new alien races, broadening their purview of all creation. This earns great deals of respect for Starfleet, while creating a path forward for others to change the universe for the better. This usually comes in the form of ships (like various iterations of the U.S.S. Enterprise) that have been used in the franchise. Their mission is to bring peace to the galaxy and to create peace through unity.
By contrast, the X-Men of the Sins of Sinister timeline created an expansionist empire out of the remains of Krakoa. All other worlds and cultures have been wiped out, with the Earth left to rot as a cosmic graveyard. The mutants send out their forces through the universe, wiping out any and all opposition they encounter. Each decision is one made selfishly, a continuation of the corrupted moralities at the heart of this timeline. Hope in particular has become one of the most feared figures in the galaxy, wiping out entire solar systems with a demented sense of glee. Their latest development is the creation of a powerful spaceship known as the Marauder, commissioned to explore the galaxy and plant targets onto new civilizations. Their mission is ultimately to keep the mutant empire expanding outward (and prevent it from turning on itself).
There is Still Hope in the X-Men's Darkest Timeline
The Sinister X-Men's approach to alien life is a direct contrast to how other races are encountered in Star Trek, using them as an excuse to continue outward expansion at the cost of untold innocent lives. It's what makes the X-Men mainly feared, in the same way, the Federation is largely respected, a reflection of their impact on the greater universe as a whole. The corrupted X-Men's expansion works as a dark version of the Federation's worst traits. They are a casually cruel intergalactic empire focused on expansion above all else.
The ending of Immoral X-Men #2 ends on a very Star Trek-esque note, as Rasputin IV and Sinister commandeer the Marauder and set off on a journey to explore the galaxy and locate his stolen lab. This should hopefully give him the chance to reset the timeline and save the day. The heroic Chimera Rasputin IV even takes a captain's chair on the ship's bridge, which looks strikingly like the main backdrop of countless Star Trek episodes on the bridge of the Enterprise. It's an interesting development for the corrupted X-Men to take and is quietly one of the best dark reimaginings of Star Trek ever.