You are right - there would need to be a complete overhaul of the formula car racing world from top to bottom. I'm just saying if people want loads of overtaking, sliding cars, close racing and so on, then that's what needs to happen. I personally am happy with the status quo thank you very much, but endless minor aero tweaks in an open formula (where engineers quite rightly will strive to negate the effects of any rule changes) will never have the desired effect.