LIKE MRS. BENNET IS DEF A FACTOR but since she's never actually seen and a ton of the early videos are called into question as Lizzie's prejudices are revealed, and because her impression is so over the top, I feel there's a lot of possibly-unintended doubt cast upon the Mrs. Bennet thing. And she's just not as present at social functions, which she can't be due to the times, so although I agree that Lydia is a sidenote to Darcy and Caroline, she's the only one the viewers can really judge for themselves so (like with Caroline being the villain onscreen and Darcy being a dick offscreen) it unavoidably makes more impact as a factor.