Roman,
I do understand the part about the eBay rules.
What I am saying is that if I had an ID of xenalook and a registered name of Xena Look and you blocked me, all I would have to do is create an ID under, say, billybob with a registered (fake) name of Billy Bob.
It is actually simple to get fully verified by eBay and PP with a fake name, and I mean fully verified; that's the scary part.
Neither you nor eBay would know about this and I could buy from you and hit you with lots of negs. Since the new account will be impossible to correlate to the old, blocked, one you would not be able to get the negs removed.
I mean, we are getting off topic here but, again, if someone wants to get you, you are a sitting duck 😞
Bernie