Wolverine 2*
Characters I'd like to see:
Yuriko Oyama
Silver Samurai
Alpha Flight
Col. Stryker
The 1st third-to-half of the movie would take place in Japan, to establish Logan's relationship with Yuriko and Silver Samurai. The latter part of the film would take place in Canada with Alpha Flight detaining Logan because of Stryker's possible unfinished business with him. Yuriko would be involved there, as well, to see how she becomes Lady Deathstrike, Stryker's henchwoman (maybe tie into X-Men: the Official Game, though I wonder how HYDRA would be explained, or if it should), and why Logan and Yuriko have no recollection of each other. Yuriko's father's involvement in the advancement of adamantium bone bondage could provide a reason for her to play a role in the latter part.
*A lot of this story has apparently been explained in X-Men: the Official Game, so maybe this movie is a bit unnecessary, but it still hasn't been committed to film, so it could still work.
Wolverine 3
Characters I'd like to see:
Warpath
X-23
Wolfsbane
Daken
This film would run either concurrently with X4 or right after, and would involve Wolverine becoming the leader of X-Force to respond to the increasing lethal threats against the mutant populace.