I look at it like this. It would be no different than the old gentelmans agreement used to be before the free pass/lucky dog rule came into effect. The leader would slow down and let any lap down car (1,2 10, 30 laps down did not matter) pass them. It was the leaders choice if they wanted to do this or not. If they are going to have this rule at least make it the first car not on the lead lap. IMO
With the new way there never will be any way that a car a lap or more down to be able to race their way back on the lead lap.
Don't say that it is not possible for them to do it the old way. Do you think that the 48,24,5,99,16,17 ECT would not be able to pass the leader and race their way back on the lead lap if they got caught a lap down because of a caution right after a green flag pit stop.
fsstnotch, If the car that has no front end and is not competive then it should not be able to run the min speed for the track and should not be there anyway. Although that car could actually do fine in 1/2 mile short tracks.