I agree with your idea about the points system. But has single lap qualifying really made much difference? I don't think so. The backmarkers are still at the back, occasionally a 'name' will start last and work his way through the tail-enders in a more powerful car not exactly exciting watching Ralf, Kimi or Rubens passing Verstappen or Wilson and so on. I'm more interested in the racing at the other end.
Get rid of Launch Control back to the old qually format and as someone else mentioned points for qualifying. Maybe Minardi can put a squirt of fuel in and score 16-18 points a year.