Back in January I had a short-lived discussion about it here:
http://forum.barrowdowns.com/showthread.php?t=18621
Having played Assassin's Creed 1, 2, Brotherhood, Revelations and some of 3 and 4 in the last few years (goodness knows why, I think the historical gimmick and the climbing buildings gimmick suckered me in) I think I'm a bit burned out on this kind of action game.
I played the Battle for Middle-earth strategy games but they were basically just interpretations of events from the books (and films of course). I'm not so interested in some fan-fic a bunch of game developers (who let's face it, are not in a profession generally renowned for great writing in the mainstream Triple-A industry at least) have cooked up.
This is why I said in the other thread that the Kin-strife might be good fodder for a game: lots of juicy racism, extremely violent, obvious villain (Castamir), also doesn't have to wildly contradict original narrative material.