Why was a Jane Austen adaptation given to a man to write in the first place? She was a rare female voice writing about contemporary upper and middle class women. If Andrew Davies wanted to shoehorn in racial and social inequality, incest (a la Game of Thrones), sex scenes and a gay character, why didn't he go off and write a historical drama all of his own?
Well, that's exactly what he did, really, isn't it?
Andrew Davies has adapted umpteen historical dramas for television and film beautifully (including the marvellous BBC adaptation of Pride And Prejudice in the 90s). I think that perhaps a mostly original script is where he falters.