Bump for knowledge, someone fetch John Beamer!
Erm, I’ve personaly only a very basic grasp of the concepts involved, essentially gathered from aero blogs such as his contributions, Scarbs’ thing etc but i’m fairly certain it’s about feeding the diffuser and manipulating the air around the main body more effectivley, not certain why running the wing lower makes it more effect then, but again, that’s probably the diffuser.
Modern low noses tend to be more of a weight distribution thing, with the bias shifting backwards last year Brawns advantage was lost, the noses came up for aero benefit, Merc had a shocker Redbull tried incredibly hard and still couldn’t loose either title.
Make a good article this question.