If they made Artemis Fowl like they did Harry Potter, with a cast of excellent actors, and without an added romantic subplot (but Eoin C. is working on the movie! There's thankfully no chance of the last one), then Artemis Fowl- The Movie would live up to the book's high standards.
Personally, I'm thrilled that Mr. Colfer is working on the movie. That has decreased the chances of us having to see a sexy and ditsy Holly, a friendly and disarming Artemis, or a witty and focused Juliet. At least the characters are safe!
Mr. Colfer has stated that there will be different plot twists than in the book. That's a little bit worrisome, but at least it's Mr. Colfer that's writing them.
I personally think that there should be a movie, since it will be well made and have author input, and it will expand the fanbase of one of the greatest writers of our time!