You still haven't understood the real issue. The political climate has changed, even since Thor 2. Enough people know that drow are supposed to be black that you would be accused of "whitewashing" and thereby "denying jobs to black actors".
Really?
How many members of the audience do you truly suspect know that much about D&D?
The film will have to appeal to a mass market, which I believe you have admitted, and the average moviegoer won't give a flying fig about how Drow should have been depicted.
IMHO, the average viewer isn't as aware of D&D lore as you think they will be.