2) More Clones
I wasn’t personally a fan of X-24, but the X-Men Universe introducing the concept of clones is definitely interesting. While I don’t think we should expect to see future X-Men movies utilizing a variety of familiar faces as unstoppable killing machines, Mister Sinister taking advantage of these creations is definitely possible.
After all, he’s been known to create multiple bodies for himself (essentially meaning he’s immortal), while he’s cloned both Cyclops and Jean Grey in the past, a method he could have perfected since Zander Rice managed to create a new Wolverine.
That could be a real game changer for any number of franchises moving forward, and adds an interesting new element to a series which has never shied away from some pretty heavy sci-fi concepts. Logan introduced us to the idea of clones, but future movies could really take that ball and run with it now.