I've been thinking about it and I am beginning to wonder how long we have until expired domains are turned against the BH community. They have carried extra value to ranking for so long that they've become one of the most popular SEO commodities lately. Yet they are also the largest footprint in many ways. And in many cases domains will expire, be picked up for a PBN, get used for a year or so and get dropped again, then get picked up by another guy who uses it on yet another PBN. The amount of wear on many domains must be mounting and one would assume that the GooCrew would eventually simply bother to notice that recently built sites that use dropped/expired domains have a 1000% higher likelihood of being spam than a fresh domain. Any reason why this won't happen?