eBay has changed things to make it a buyer friendly platform.
Exactly!
Bring me more buyers, eBay. If my feedback suffers in the process ... I'd rather be a wealthy man with low feedback than a proud 100% positive beggar.
Bring them in.
Let's prepare for few undeserved negatives. With bigger crowd the more chances. If I am reasonable, 99% of customers will be. If you provide better service than competition, your customers will hardly want to cut themselves off.
Use your blacklist. These are the same customers we are sharing here and unless you are doing something really wrong, there is whole bunch of lousy sellers (your competitors underselling and making money on S/H) going to take the fall. This is good for you and me.
The FB changes may taste sour, but they are designed to increase eBay profits. Since eBay profits come from ours, they are mainly designed to increase mine and your profits.