The problem with that assessment is that F4 is never going to be a success on the level of Avengers or Spiderman. There will probably be a time in the not to distant future where people are going to tire of all of these comic/superhero movies. All of these changes are going to irk the hardcore fans, but that really isn't the audience for the picture. However, when you tell the actors to not bother reading the source material, it makes me wonder how committed FOX is to the property. Honestly, I don't think they would intentionally put out a bomb and waste all the money involved in production, marketing, etc., but I do think that selling the rights back to Marvel has to be on the table. While I don't think Marvel would have a burning desire for the heroes, I think they would love to get the cinematic rights back for Galactus and the Skrulls.