We are working to improve the GB process to help prevent something bad happening in the first place, but surely you can agree that it's not 100% possible to eliminate all wrongdoings? The only way to remove all scams from GH is to remove all monetary transactions (which some people wouldn't mind), but I don't see that happening any time soon.
So at this point we have to let the community decide who they trust to run GBs, and sometimes we don't have the best judgment. But like I said, we have plans in the works to implement requirements to start GBs, similar to the classifieds subforum. Unfortunately, however, we cannot undo mistakes that have already taken place.
Or did you have a different point entirely?