One of the many, many, MANY flaws of "X-Men Origins: Wolverine" is that it's hardly Wolverine's backstory as much as it's Deadpool's.  The film put more effort in trying to show how pretty-boy Wade Wilson became the disfigured Deadpool than it did into why Wolverine lost his memory (never forget: adamantium bullets).  It was always a bit of a weird choice to have someone as handsome as Reynolds play Deadpool but does make sense when you consider Deadpool's nickname, "The Merc with a Mouth" and Reynolds, to his credit, carried that part of the character beautifully...before they sewed his mouth shut and shoved katanas in his arms.

Now Fox is, unsurprisingly, trying to give Deadpool his own movie.  Of course, there are the questions of whether this would take place before or after "Wolverine", if the studio, in its infinite wisdom would want to make sure we all go to see Reynolds' pretty face, and if they would embrace the character's humor and propensity to break the fourth wall.