Of course there's room for middle ground. Wrecking people under caution is and has always been the "no-go zone". Even under "boys have at it", that's over the red line. Settle it on the track, or settle it like men between the haulers after the race. Under caution you've got a lot of drivers checking shit, talking on the radio to their team, etc and not looking out for careening cars from morons settling disputes. Nevermind any emergency vehicles that might be out there, pace car, etc.
Don't give me this "no room for middle ground". It's common fkn sense, and it's been this way forever. You want to settle your dispute by wrecking someone under the caution flag, you're going to pay the stiffest penalties. And that should not change.