So how's that rule going to be worded to assure that a-holes are at the back of the qualifying grid? Or is there a chance the new plan would just reinforce their "right" to be there?

We can't legislated away misbehavior. If someone is going to pull crap like that, it's going to take enforcement - starting with the rules they are already breaking.

Crashing into someone's camera-equipped car on the straight under a green flag is going to be a little hard to explain away, particularly if that same camera captures your crew person letting them know on the grid that you anticipate passing them if they aren't fully up to speed when you're ready to rock...

K