Yeah, in the book Darcy basically bribes Wickham to marry Lydia as a form of damage control to her reputation (and, by extension, her sisters' reputations, which prevents his family being tainted by association), and I absolutely agree that there's no way to do a modern version of that without extreme ickyness. Also, yeah, they can't modernise certain aspects of it and pretend that contemporary women don't have more options than they did 200 years ago. But I guess I remain cautiously hopeful that this is not what they're going to do.