So, we've been playing with this Count to 9999 thread (very fun) and are currently passing through the era of Richard the Lionheart.
Not one of my personal favourites, but he did have an interesting (and very conflicted) life. It occurred to me that he might make a good project for Sean. He was younger, of course - 31 when he took the crown and 41 when he died - but I don't think it would be too much of a stretch, since Richard was a warrior from the age of sixteen (which has got to age a guy) and Sean has the colouring and frame to carry it off (okay, maybe not the height, but what was 'tall of stature' in the 12th century, when the average height for a man was about 5'6" ?)
"He was tall in stature, of shapely build, with hair between red and yellow. His limbs were straight and flexible; his arms somewhat long; he had long legs." (written about the time of the 3rd Crusade).
Hell, if Anthony Hopkins could portray him . . .
It would be interesting to see a film that concentrates more on the man instead of his actions (hard to separate, I know) - and there are enough historical questions about his sexual ambiguity (not the sleeping with the French king, but the two confessions he made) that it would be interesting to at least add the question to the characterization. Not as a focal point of the film, but as a part of a complex characterization of the character.