I wonder what changes he was forced to make due to politics. I did interview Jones before the film came out, and he did go on talking about how he made Durotan's wife a more significant character in the film, and she originally wasn't going to be in it as much. It seems like before it came out he was willing to talk about how much creative control he had over the film and made it seem like he had a lot.
IMHO the film is very messy, but not just in terms of editing. Bad acting and casting choices all around.
I will say a few things. While watching the film, the Alliance is downright virtuous and innocuous compared to the Horde. The Horde are pretty much made out to be an evil invading army who rape and pillage the land. The Alliance are not hateful at all, and the queen even gently treats Garona as a friend and they try to recruit her. IMHO, it just didn't feel realistic if they were trying to make a more evenhanded war film. The Horde very much came off as bloodthirsty, evil, horrible bad guys OTHER than Durotan and his friends.
The trailers make it look like the Alliance is going to team up with Durotan and his tribe to fight against Gul'dan but that never really happens. The one human bad guy is because he was possessed by a demon.