I'm just glad in my 27 or so hooks this year that my rear ring and pinion developed small hairline cracks. That was a huge savings for me in that it prevented my transfer case from exploding. :bang bahahahaha
I didn't "break" a single r&p this year, however I did replace it twice as preventative maintenance, and I think I pulled on some of the best tracks in the country.
The reason I would like to see the rule change is strictly because if you are following a points series and have a catastrophic driveline failure as some people have had this year, you may miss a hook if you don't have every spare part on hand (many pulls are 3-5 hours away from home).
I guess the real question is why is everyone afraid of pulling against a truck with open driveline?
I'm not. If I can put some stronger parts on my truck that equates to me spending a few extra days with my wife and kids as opposed to fixing my broken **** then I'll probably do it.