With Deadpool, one option is to keep the budget really low. It's also likely to be called X-Men Origins: Deadpool to tie it to the franchise. The other option is to make it more of an X-Men flick with wider appeal. The leaked script already included Colossus. Seems logical but it all depends on the box office performance of whatever they do next. They've never been willing to commit to several films and plan a structure for the entire franchise.