Originally Posted by magneto23
They have time for one MAYBE two films(If they knock them out back to back) with the original cast. That's it. You have to assume 2016 would be the earliest but 2017/18 is more realistic for an X4. By that time how much will Jackman and Berry have left? Both will be pushing 50. Too old IMO. Most of the GA will be ready for new fresher faces by then IMO.
Age isn't really a big deal to general audience especially when it comes to movie franchises. As long as studios are earning good amount of money, they will release another movie and as long the cast doesn't look too old and fragile and if the story is good, it won't turn off the general audience.