After the unprecedented success Deadpool has enjoyed since it released this past weekend, it was inevitable that fans were going to assume this would pave the way for more R-rated superhero movies - particularly based in Fox's X-Men Universe. This may very well be the case, but the fact remains that not every character would benefit from this in the same way the Merc With A Mouth Did.
Wolverine? Possibly - but with Logan already successfully established in a PG-13 continuity, it's very unlikely the studio would change things up. There is one team-based movie in the works (or at least, it was until very recently) that could work very well with a bit more violence and profanity thrown in, however.
After their IMAX screening of Deadpool, Collider asked producer Simon Kinberg if he envisioned any other "specific properties" being rated R down the line. "I think there are some stories that could be R-rated," he responded. "I don’t know what they are, I mean I think the mainline X-Men movies have their own tone, which is a more operatic tone. It’s more dramatic, it is more PG-13 in a way. X-Force I could see being R-rated, and who knows?" Kinberg is quick to clarify that this doesn't mean the film will be Rated R, just that he could see it working. It makes sense of course, as Wade Wilson would likely be on the team, possibly along with the likes of Colossus, Archangel, Psylocke, and Cable who we now know will be introduced in the Deadpool sequel.
Director Jeff Wadlow was on board the X-Force movie at one point but it seems to have slipped off Fox's radar for the time being. If they do get back on track, would you like to see it rated R? Do I even need to ask that question?