Okay, there have been several changes to the story. The Mansion part will be cut out of the movie, and we will just keep the Raccoon City part. I feel it is better if we just cut to the chase, with the outbreak below Raccoon City (in Birkin's lab) and then put all our main-characters in Raccoon City (most of them, however, won't meet, because of the distances we live from eachother).
However, I still hope to stay as true to the game as possible... but still add much originality to it. I DON'T, and I repeat, DON'T just want this to be a simple re-telling of the games... but I want it to feel much like the games, to have the same feel.
Wesker will be in it, and a villain I made up called "Mona". Mona is an expert on tech and she is the one that created Nemesis, with much help from Wesker. Wesker is not the chief of all Umbrella, just a large part of Umbrella. And don't worry, Wesker (and Mona) will have his piece of action, at the end of the film.
I am also thinking of adding Tyrant to the film, alongside Nemesis... but I am not sure if that will work (Because Tyrant requires MUCH more special-effects and make up than Nemesis, as he has those strange "tube-arms" and all that). If Tyrant is not in this film, he will most likely be in a possible sequel.