Still think you've gotta go with a specific novel or story arc. To throw something as big and vast of a sea of material like D&D on a hollywood writers desk and try to make a movie is a much and usually translates to bad.
The comic movies have been relatively successful because they have a few things.
a budget
some star power
have stayed relatively close to the theme and personalities of the hero's(while not canon, you can totally envinsion this going down)
have marketed well across all age groups
While I have no suggestions on which novel/trilogy to use. It seems to me that simpler is better at the start. Something like Dragonlance may be to big to take all at the start. A lot of History, a lot of characters, villains. Off screen pieces. A wierd old man running around mostly insane with moments of sanity and you have no idea why mostly because you were watching things get blown up and the reptile guys getting killed.
The comic movies have been relatively successful because they have a few things.
a budget
some star power
have stayed relatively close to the theme and personalities of the hero's(while not canon, you can totally envinsion this going down)
have marketed well across all age groups
While I have no suggestions on which novel/trilogy to use. It seems to me that simpler is better at the start. Something like Dragonlance may be to big to take all at the start. A lot of History, a lot of characters, villains. Off screen pieces. A wierd old man running around mostly insane with moments of sanity and you have no idea why mostly because you were watching things get blown up and the reptile guys getting killed.