Nobody,and I really mean not a single engineer involved in racing who I know, and I know all the well established ones, thought the overhaul would lead to more overtaking. It is a mystery why it went ahead. It is probably the internet spread false information which is leading to enthusiasts embracing total bollox all over the place (it is not only hifi).I quite like the way they design the livery , it's the fact the cars can't run behind each other and thusly can't overtake each other very effectively that a issue. It seems even worse this year, that disappointing given the over haul in design that's taken place to ' improve' the spectacle for this year.
It has been put about that "more mechanical grip" will be an aid to overtaking, mainly by drivers as far as I can tell. No data supports this. All simulations have always shown the opposite and, those who pay attention to what is happening rather than verbal diarrhoea in magazines and web sites, will have noticed lots of overtaking in wet races, where the aero disturbance on the following car is similar and the mechanical grip less than half.
There are disappointing parallels in enthusiast opinion now there is so much unsupported bollox being repeated on web fora (forums?)