Just to play Devil's Advocate for a moment, consider this scenario: A 40 lap A-main goes without a single caution until lap 35. The top one or two drivers have "checked out", and have lapped deep into the field. And very few drivers have pulled off. If you have well over half the remaining field down a lap, why shouldn't they be able to race with each other for position without having to worry about screwing things up on the restart for the leaders?

Now, for a regular 20 or 25 lap weekly feature, you should probably go ahead and put the lappers up where they belong. It's usually not going to matter if the lappers get to race for position in those deals, because there will usually only be a couple of them, and they will be towards the tail end of the running order anyway.