Interesting that they are going ahead with Sea of Monsters. It's quite an entertaining book.
There's is only one problem. There are too many random things happening along the course of the story, Percy and his friends stumbeling into monsters too much on the way to their destination. These things are not a part of the plot, but it only come with distraction to the plot. One goes: "Oh not again! Not another monster they have to fight that adds nothing to the actual story."
Are these encounters written in just to give more heat to an otherwise quite dull quest adventure?
Now that they are doing the second film, I wonder if they are going to adapt all five books in the Percy Jackson & The Olympians series. I don't think it's possible unless they change actors soon. The productions move too slow, nothing like Harry Potter.
But I have one idea. What if the writers take away all these quite stupid monster fights and focus only on the core of the story. Then I guess we will get less than one hour of running time, perhaps 55 minutes and around.
You know, that leaves room for adapting the third book as well, into the same film. It's called The Titan's Curse and the important stuff in that book can also be crammed into around 60 minutes.
Right after the visit at the Cyclop's island, the adventure can continue and several new characters can be introduced along the second quest: Bianca, Nico, Artemis, Zoë Nightshade, Apollo and Atlas.
Doing so, it will also force the writers to return to the idea of the books; that Titans are the ones behind the masterplan and not just angry teen Luke (as they did in the first film).
This is only wishful dreaming. The films won't be made like this.
The two final books are difficult to melt together, unless they cut a lot. But the fans would get furious. To them, keeping all the details is more important than having a good film.
But I have a difficulty with the 4th book then. The heroes aren't doing much more than to going down into the labyrinth and facing terrors, then go up outside, then down, then up, then down etc. That can't be done very well on films, it would look too repetitive. The story has to be heavily re-written to suit the film format. And then, perhaps then.... it could be possible to include the battle scenes of The Last Olympian. The whole book just center around it, the upcoming war and then the actual defending of Manhattan. But I guess we won't be that lucky.