I'm not aware of the incident but the last thing we need is a rate of decent limit. Completley impractical for skydiving ops, and pretty impractical for all the high capacity jets and turbo props (especially the ones operating above 10000ft), and no doubt impractical for some others.
Airmanship suggests easing the ROD/ROC near crossing traffic you are aware of, but this is class G we are talking about.
The question should rather be focused on how appropriate class G is in a given area.