As the line between animation/cgi and live-action is getting more blurred I think Anime will become more mainstream for western audiences. There are also great Graphic Novels that have not yet been tapped.
Baylor is right, these things do come in cycles. I don't think that is coincidence, I think studios say X is making a alien invasion movie so we need one too, why don't we get Y in to do it. Marvel-type comics may have been incredibly popular, but apart from
Superman, films based upon them were never blockbusters like they are now and hence were very low budget. Rodders is probably correct that at some point they will stop making money and a studio will make a huge loss, which will signal the end.
We haven't had many disaster movies for a while - some, but not the glut that there used to be with towering infernos above endlessly sinking passenger liners.
There hasn't been a
Tarzan film for a long time. What about the old skool horror movies? I see
The Mummy and
Frankenstein are being remade yet again, but what about the
Werewolf, Dracula and
The Invisible Man. The problem is that when you update them you lose a lot of the charm, but if you make them retrospective then they seem dated for a young audience.
The new
Star Wars trilogy may bring along more Space Opera.
That's as far as my crystal ball can see.