Which unfilmed book series would make the best movies

In the movie business, book to movie transitions sometimes work (Harry Potter, Hunger Games)

Then they sometimes don't (Percy Jackson, Twilight)

And sometimes, they are abominations (Eragon)

The question is, I know of two book series that have movies in the works, and one where

Number 1: Artemis Fowl

Number 2: Maximum Ride

And a third one where, while there is interest, there is great debate on how feisable it is: Warriors

Now, here's the debate here....

Artemis Fowl has the benefit of a villain protagonist to start with, and a lot of character development to play with. However, the books are the shortest of the three, and the main director mentioned for it (The guy behind ORder of the Phoenix) will fuse the story of the first two books in the film. Now, this could be an interesting inversion to the current trend of two part movies, but it could also cut out details like the Eragon movie did if done incorrectly .

Maximum Ride has more age variation allowed to the dynamics of the characters mutations (While Artemis needs an actor who can play a young Artemis correctly). However, while it has eight odd books or something....I wouldn't want to make a movie of the books after 3, without heavy revision. Heck, it could be a case when the movies are better with the books. But the later books reps could be a serious problem, like Prince Caspian was

Finally, you have the Warriors. It has a crazy huge fanbase, a large depth of material....and it stars cats. It might have to be in CGI to work, and the problem is the series would have to be written for its fans. Not recomended 10+ years, but the average age of 18. That is a fact that could make or break the movie.

So, which would be a better movie series capable of being like HP or HG?

Harry Potter and Hunger Games are big because the books were big, and right now I can't think of a book series that is comparable to either.

However Eragon could use a reboot.

Malazan books of the Fallen

if the hunger games movie is faithful to the book, my god that book is crap. on topic: yeah malazan, dragonlance, dragonriders of pern. idk how good they'd be. probably best if they did them completely cgi.

edit: wheel of time.

Preacher..don't tell the world its a comic give it to the darkest most notable director and make sure its rated R

Fahrenheit 451 could be redone and if taken seriously maybe around NC-17..excited about Enders Game, hope its great and show how he didn't know what he done and how he felt and his brother and sister stories

If Artems Fowl was a movie, i would watch it to death.

I think BOOM! Studios' Irredeemable by Mark Waid would be a great film. I would change a few things and not show everything but I think it would still be AWEsome.

-m3th.O.D.-

Flash

50 shades of gray

Word. I like the 'Inheritance' series although I haven't read the fourth book.

Harry Potter sustains itself better than Hunger Games, whose book quality declined after 1, but hey, I love Inheritance. If I could, I'd have the rights to those three books, as well as the three above and the Percy Jackson rights and create a Literature Cinematic universe, but hey, I can not turn my bodily fluids into gold or soda, so I can't afford it.