Looks like all the interesting action on Mulholland Drive comes from one corner where photographers and idiots gather to watch other idiots show off. Seems to me that if the pull-off was dug out/blocked off or otherwise made inaccessible, most of the crashes wouldn't happen.
I'm going to REALLY hate to say this, but I think US129 is more interesting. The upside, however, is that the more morons flock to Mulholland and Deal's Gap, the less of them there are everywhere else. I realize this has only a microscopic effect but every little helps.
I feel really sorry for the families of the few who ruin or end their lives trying to look good for the cameras and hope the photographers and other vultures can live with that.