So let's negate the hard work the Saints have done creating very good offensive and defensive lines. Because if you do this, that's what I think would happen. It would give an advantage to average and poor offensive lines and negate the advantage teams with good defensive lines have.
The solution IMO is then NFL needs to have better paid, full time refs who operate independent of the league office. And set up review like college football has. Also, PI should be like college football.