Maybe some racetracks designed to have cars jump at some points will bring back excitement?
Bring back jumps like in the glorious early days.
As for it being too dangerous, its part of the show.
And yes, F1 is actually show business. If they don't keep people excited, they will fade into oblivion.
This reminds me of a The Simpson epidose when a Nascar car crashes and takes off, spectators stand up in excitement only to watch the car land on its four wheels and continue driving, then people got booing and uninterested.
As for cars not being able to withstand jumps, again so what?
Make them stronger so their increased ruggedness relates to road cars that have to withstand pothole filled public roads.