I would prefer to just create new stories rather than remaking older stories because part of the charm of the older stories is that you get to see how the characters were like before they went through so many changes over the years. If you remake an older story, then you would lose the history of those characters and their original comic book runs.
@phoenixegg: That doesn't seem fair that Marvel is trying to restrict the X-Men merchandise, even though the X-Men still remain popular, even if they aren't owned by Marvel. I think X-Men is still popular because they have been popular way longer than the Avengers, but if the Avengers movies start doing better than the X-Men movies in the future, it's a possibility that the Avengers will gain more popularity than the X-Men.
Pretty much what everyone else said. If the title doesn't sell, then Marvel is inclined to cancel the title, even if we don't agree with those decisions. I think the reason why we've been getting a lot of canceled X-Men titles lately is because they are not the main titles and it would be pretty hard for many fans to keep up with so many characters and titles and they could only stick with titles that has the main story, even though they would want a solo series for their favorite characters.