If they really want a good story they should film the books by Jan Guillo, the swedish writer.
The books are about Arn de Gothia, or as the arabs later called him Al Gothi (i think)

Im not sure if they are translated in to english but if they are read it!
Not only is Arn fighting down in Outremer and is participating in the crusade, he is also a Templar Knight, and once he returns to Sweden, he has to fight the Danish invaders.

Its a really good book, if your intrested in the crusades and scandinavian history.

These are the books they should film... and get rid of Bloom, who wasnt even good as Legolas...

*searching the web*

here yha go; http://www.amazon.com/exec/obidos/tg...glance&s=books