The writer of Kingdom of Heaven self-proclaimed the magnificent directors cut to be the most historically accurate movie ever made. I think i might agree with him.

I guess considering Hollywood, that may not be saying much! (I've only seen the Theatrical version, and there are a lot of serious errors and anachronisms there). The whole thing comes off as a modern political allegory.

Good luck with your fan edit though! I haven't seen "Troy" (or "Alexander" or a lot of these modern historical epics). I saw the theatrical versions of Gladiator and KOH, though.