They can begin by getting rid of the stupid engine and tire restrictions.
F1 is about massive power and the few elite drivers that can control it. Not about toting around in an 'eco-friendly' V6 which is only marginally faster anymore than other classes.
They should also tip the scale back to mechanical grip instead of aerodynamic grip; makes it easier to overtake.
Allow those big fat tires again and big back wing so they don't have to add those 100 ugly side and front wings.
I'd say 650+ from the engine alone plus a whole lot extra from the motors and all the added torque is all about massive power and massive torque. The cars are faster in a straight line and slightly slower in the corners than last year.
There is only so much grip you can get from mechanics and if you remove too muchaero then the cars go around corners slower, which means slower lap times, which means people complaining that the cars are slower than other classes of racing.
I was hoping the return to turbo´s would bring back the horsepower but alas .
Bring back the 1500 ± horsepower 80´s turbo engines that barely survive one race, side skirts with ground effect, stick shift, wide nose and back spoilers, big tires, wider cars , stop telemetry and all in race car changes from the pit .
Probably half to 75% of the drivers now would´t race in a death trap from the early eighties anyway, lives where lost every season .
Who would you expect to pay for 40 race day engines alone per team, not including the practice and quali engines? the 1500bhp engines that BMW were playing with barely lasted a few laps.
The other changes you mention take F1 in the complete opposite direction of a technologically advanced series, stick shift, really? They've been using semi auto since 1989.
I watch every race, but there are a few things I wouldn't mind seeing. Current rule set produces some artificial passing, but I guess any form of passing is better than no passing.
Bring back refueling along with some tire changes to make a real difference between possible strategy for the drivers. Tweak the aero/downforce rules to allow for passing without KERS or DRS (wouldn't mind seeing KERS stick around in some form though, only if it works well with whatever other rule changes take place)
Racing this season has been good for the most part from spots 4-10 at least.
Refueling will likely never return because of the risks of accidents. The only way it comes back is if they have a mandatory minimum stop time which I'm sure would go down well.
If they reduce the reliance on over body aero then they might be able to race a bit closer together and make more "natural" passes, but unless they claw back all that DF from underbody aero (larger floors) then the cars will be even slower ona lap, which again will be very popular with fans.