Yeah it is not so cool with the 1 number system. Yet the new "coolness under fire" AI behaviour changes a lot of this. Try pushing a guy for some laps, threatening to overtake. If he is having a good day and is reasonably experienced, he will not mind that much. Push Yoong around and he makes mistakes galore! I have even seen JPM badgered by Rubens for 8 laps or so at Nürburgring. And JPM did NOT like it, I can tell you that! And neither did his tyres...
It works very nice, and makes the one number seed system much more dependant on what is actually going on in the perticular race.
As to the damage system, there are good points to the GPx way of doing things. Most failures come from flawed production of the components. And that is what GPx models. Nevertheless, a weak suspension will fold faster and more dramatic if you go hard on the curbs. But the car, viewed as a whole IS DESIGNED not to break down when pushed to the limit. So basing failures exlusively on drivers actions is very wrong indeed.
I see the best system as a hybrid of both. There is a seed, that determines íf there IS a flaw and what it will take to make the component break. It might have a threshold that is so low, that you will never be able to finish the race, regardless of what you do. On the other hand, it might only be a slight error that takes a major pounding to take effect. But mechanical failures that only take effect when I drive hard, with no potential flaw determined by seed, should never happen. Real F1 cars are designed to last a whole race weekend and then some.
It's only after we've lost everything, that we are free to do anything.