Ryan Reynolds says he's writing something new for his Deadpool character, "a little ensemble." Could this project be the long-awaited X-Force?

That makes a ton of sense. There's seemingly nowhere to go if Deadpool actually becomes an Avenger. Whether or not this prevents him from actually joining Avengers: Doomsday or Secret Wars remains to be seen, but if a crossover happens he likely won't actually become a member of any of the big teams.