Sure, he was good, and did a lot towards lowering drink driving fatalities, but his race record was enhanced by qualifying in multiple cars. Then, when his car broke, he drove another one. wasn't illegal, but being connected to HRT certainly helped in that situation.
The current crop of "Supercars" is a bit boring, but wouldn't take much to spice it up.
Add a steep banked corner to each track so passing could take place high or low on the track,and the "marbles" wouldn't be sprayed outside a single driving line. This could be funded by spectator stands above it because that would probably be the best spot to watch the race.
Have a separate area off a straight where stop/go penalties and race tape repairs could be occur without having to drive the length of the pit.
And, if a driver is taken out by bad driving, get 80% of the points for the position you were in at the time of the incident. The idea that you can race to the last few laps and get taken out by a moron and lose everything just plain sucks.