1) Sabretooth
Both Hugh Jackman and Liev Schreiber have teased a possible appearance from Sabretooth in Logan, but there haven’t actually been any significant rumblings about that actually happening recently. While X-Men Origins: Wolverine gave it a good go, we’ve yet to see the relationship between these two bitter enemies properly explored on the big screen, and considering the fact that Origins was wiped from history, it could be that an appearance from the villain here would just end up feeling really random.
[zergpaid]However, if handled well, Sabretooth being revealed as the mastermind behind the fall of the X-Men and X-23 being cloned from Wolverine could be a really exciting twist which leads to an epic final battle between the two. This is a character with a lot of potential, and seeing as Schreiber was so great in the role, seeing him reprise it here would be a great way to make Wolverine’s final adventure even more special.