I don't think the length of the track would be an issue if they would develop a safe way to stop the cars in the sand trap... and configure the sand trap in a way that would prevent the cars from colliding with a solid object.The drivers/owners and NHRA should come to an agreement on suitable track length, including shutdown areas. If a track cannot fit the specs, well good night.
They need to do something with the netting too. I keep thinking about how the net is only about 3 feet high. It needs to be about 20 feet high to prevent the "tripping" effect like Del Worsham experienced at Pomona.
A standard configuration sand trap with a tall net that could "capture" a car could do a lot to solve some of the problems.