Yeah, I didn't like what Warren Ellis was planning, either. When I first heard about the whole Goat f*cking and naked Alucard scenes (I'm sure this one isn't a problem, but his character art for that film is horrible), I literally rolled my eyes at how hard they were trying to be 'adult-oriented' with this film, but, like the sucker I am for CV III, I let it pass and tried to keep my hopes up.
However, when I read on his blog that he was going to remove Grant from the plot just because he thinks his surname sounds stupid, not to mention he believes that Pirates weren't around in the 1400's (he truly doesn't know a damn thing about CV, because it's not based on actual history, let alone the fact that the Japanese manual states that Grant is a rouge/freedom fighter), I was pretty PO'd, due to the fact that he's my favorite out of the three heroes who help Trevor, and he actually played a role in the game's story; his family was mercilessly killed by Dracula, and was sent to the Clock Tower after being transformed into a hideous monster. There is no reason not to include him. It's unfaithful to the original source material.
Paul W.S. Anderson, or whoever is directing the live-action movie, doesn't get any slack from me, either. Aside from the silly character relationships, he wanted to change Grant's name to Granvid in order for it to sound 'more Romanian'.
Bottom line, movies and video games will never go well together if stupid directors keep screwing up pre-established storylines and characters. Except for PoP: SoT. That was actually a good movie.