Re: Ghost Rider is back at Marvel Studios!
It's all part of an overall image though for it's subsidiaries. Disney realized it wasn't good for it's brand to release R rated films so it decided to purchase touchstone to allow for that.
Disney didn't buy Marvel to release those types of films, hell their films have so far tended to be lighter in tone than the stuff WB/DC has released. Disney owns Marvel and can dictate what type of films it will or won't release. Also Marvel is much more closely associated to disney than touchtone pictures is.
I would highly bet against the idea that marvel will be releasing any r-rated films at least in the near future. Marvel's image as a studio now is the lighter pg-13 avengers related material and trust me disney isn't complaining about that.