I've argued this in another thread, so I'll be brief: sellers need a mechanism by which they can warm other sellers. Buyers need a mechanism by which they can warm other buyers. Both need to be able to use this mechanism without fear of retaliation and fraud. This new system is not the answer, it is the continuation of eBay's legacy of "hands off" approach to how it operates. It only acts on corporate demands, like DMCA and the like.
But, like any market, this certainly opens the doors for alternative services, like auction or feedback tracking. I envision a site (which would probably face a legal row from eBay) separate from eBay which would track legitimate complaints against sellers AND buyers. Doomy inspired this idea.